p.36
Sphenoid Bone Anatomy and Functions
What are the three main parts of the sphenoid bone?
Lesser Wings, Greater Wings, and Body.
p.20
Temporal Bone Anatomy and Functions
Which suture connects the temporal bone to the sphenoid bone?
The sphenosquamosal suture.
p.22
Parietal Bone Characteristics
What part of the skull do the parietal bones make up?
Part of the roof and sides of the human skull.
p.31
Frontal Bone Structure and Borders
What are the main parts of the frontal bone?
The main parts of the frontal bone are the squamous part, the orbital part, and the nasal part.
p.16
Temporal Bone Anatomy and Functions
How is the term 'temporal' linked to aging?
The term 'temporal' links gray temples with aging and the passage of time.
p.34
Sphenoid Bone Anatomy and Functions
Where is the sphenoid bone located?
Centrally located in the skull.
p.32
Frontal Bone Structure and Borders
What is the difference between a complete and incomplete supraorbital foramen in the frontal bone?
A complete supraorbital foramen is a full hole, while an incomplete one is a notch.
p.23
Parietal Bone Characteristics
What are the superior and inferior temporal lines on the parietal bone?
Attachment sites for fascia and muscles.
p.41
Sphenoid Bone Anatomy and Functions
What is the Tuberculum sellae in the sphenoid bone?
It is the anterior border of the Sella Turcica, also known as the horn of the saddle.
p.7
Occipital Bone Structure and Function
What important opening is found in the occipital bone?
The foramen magnum, through which the spinal cord passes to connect with the brain.
p.47
Ethmoid Bone Structure and Functions
Which part of the ethmoid bone helps in directing air upward?
The concha of the ethmoid bone.
p.44
Sphenoid Bone Anatomy and Functions
Which artery is associated with the sphenoid bone?
The artery of the pterygoid canal.
p.3
Neurocranium and Viscerocranium Functions
What is the function of the neurocranium?
The neurocranium is a protective shell surrounding the brain, brain stem, and cerebellum.
p.28
Frontal Bone Structure and Borders
What is the primary function of the frontal bone?
The frontal bone forms the forehead and the upper part of the eye sockets.
p.31
Frontal Bone Structure and Borders
What does the squamous part of the frontal bone form?
The squamous part forms the forehead.
p.31
Frontal Bone Structure and Borders
What does the orbital part of the frontal bone form?
The orbital part forms the roofs of the eye sockets.
p.30
Frontal Bone Structure and Borders
What do the thickened ridges over the supraorbital margins support?
They support the eyebrows.
p.20
Temporal Bone Anatomy and Functions
Which suture connects the temporal bone to the occipital bone?
The occipitomastoid suture.
p.6
Sutures and Their Clinical Significance
What happens if any of the sutures in the skull close too early?
There may be no growth in that area, forcing growth to happen in another area or direction, resulting in an abnormal head shape (craniosynostosis).
p.21
Neurocranium and Viscerocranium Functions
What is the primary function of the facial bones?
To form the structure of the face and support the teeth.
p.4
Neurocranium and Viscerocranium Functions
What is the function of the viscerocranium?
The viscerocranium, or facial skeleton, is formed by the bones supporting the face.
p.4
Cranial and Facial Bones
What bones comprise the viscerocranium?
The viscerocranium comprises the vomer, inferior nasal conchae (2), nasal bones (2), maxilla (2), mandible, palatine bones (2), zygomatic bones (2), and lacrimal bones (2).
p.35
Sphenoid Bone Anatomy and Functions
What is the sphenoid bone?
The sphenoid bone is a complex bone located at the base of the skull, in front of the temporal bones and basilar part of the occipital bone.
p.14
Occipital Bone Structure and Function
What is the function of the median internal occipital crest?
It serves as an attachment site for the falx cerebri.
p.29
Frontal Bone Structure and Borders
What are the primary functions of the frontal bone?
Protection for the brain, eyeball, and lacrimal gland, and serves as an attachment site for muscles.
p.5
Sutures and Their Clinical Significance
What is the function of sutures during the birth process?
Sutures allow the bones to move during the birth process.
p.37
Sphenoid Bone Anatomy and Functions
What does the sphenoid bone form together with the occipital bone?
The load-bearing midline of the skull base.
p.32
Frontal Bone Structure and Borders
What structures pass through the supraorbital foramen or notch in the frontal bone?
The supraorbital nerve, supraorbital artery, and supraorbital vein.
p.22
Parietal Bone Characteristics
What is the primary function of the parietal bone?
Protection for the brain and attachment site for muscles such as the temporal muscle.
p.11
Sutures and Their Clinical Significance
Which suture connects the occipital bone to the mastoid portion of the temporal bone?
The occipitomastoid suture.
p.49
Ethmoid Bone Structure and Functions
What is the function of the scroll-like medial projections of the ethmoid bone into the nasal cavity?
They increase the surface area.
p.10
Occipital Bone Structure and Function
With which vertebra does the occipital bone articulate?
The first vertebra of the spinal cord (Atlas).
What are the major compartments of the skull?
Cranial fossae (3), temporal fossa, infratemporal fossa, and pterygopalatine fossa.
p.45
Ethmoid Bone Structure and Functions
What is the role of the perpendicular plate of the ethmoid bone?
The perpendicular plate forms the superior part of the nasal septum, which divides the nasal cavity into two nostrils.
p.38
Sphenoid Bone Anatomy and Functions
With which bone does the sphenoid bone articulate to form part of the nasal septum?
It articulates with the perpendicular plate of the ethmoid bone.
p.27
Sutures and Their Clinical Significance
Which artery is associated with the parietal bone and is at risk of fracture?
The middle meningeal artery.
p.50
Ethmoid Bone Structure and Functions
What is the function of the olfactory foramina in the ethmoid bone?
They allow passage for the olfactory nerves.
p.43
Sphenoid Bone Anatomy and Functions
Which nerve branch is associated with the sphenoid bone?
Meningeal branch of the mandibular nerve.
p.31
Frontal Bone Structure and Borders
What is the primary function of the frontal bone?
The frontal bone forms the forehead and the upper part of the eye sockets.
p.12
Occipital Bone Structure and Function
What is the function of the nuchal lines on the occipital bone?
They serve as attachment sites for muscles (tendons), ligaments, and aponeurosis.
p.10
Occipital Bone Structure and Function
What are the primary functions of the occipital bone?
Protection, entry point for the spinal cord into the skull, and attachment site for muscles.
p.10
Occipital Bone Structure and Function
What are the three regions of the occipital bone?
1. Basilar part (front), 2. Lateral parts (sides of the foramen), 3. Squamous part (back).
p.41
Sphenoid Bone Anatomy and Functions
What is the Dorsum sellae in the sphenoid bone?
It is the posterior border of the Sella Turcica, also known as the back of the saddle.
p.39
Sphenoid Bone Anatomy and Functions
Which division of the oculomotor nerve passes through the superior orbital fissure?
Both the Superior and Inferior divisions of the oculomotor nerve (III).
p.46
Ethmoid Bone Structure and Functions
What does the ethmoid bone separate?
The nasal cavity from the brain.
p.38
Sphenoid Bone Anatomy and Functions
What part of the brain does the sphenoid bone support?
It supports part of the frontal lobe of the brain.
p.27
Sutures and Their Clinical Significance
What bones are connected by the sphenoparietal suture?
The parietal and sphenoid bones.
p.8
Occipital Bone Structure and Function
What does the occipital bone form?
The base of the skull at the rear of the cranium.
p.19
Temporal Bone Anatomy and Functions
What are the functions of the temporal bones?
To protect the delicate structures of the ear, regulate ear pressure, and possibly protect the temporal bone during trauma.
p.30
Frontal Bone Structure and Borders
What is the function of the lacrimal fossa in the frontal bone?
It accommodates the lacrimal gland.
p.30
Frontal Bone Structure and Borders
What is the frontal (metopic) suture and when does it usually disappear?
It is the suture between the frontal bones that usually disappears by age 8.
p.49
Ethmoid Bone Structure and Functions
What part of the nasal septum does the perpendicular plate of the ethmoid bone form?
It forms part of the nasal septum.
p.18
Temporal Bone Anatomy and Functions
What is the location of the temporal bones in the skull?
The temporal bones are located on the sides and base of the skull.
p.18
Temporal Bone Anatomy and Functions
What are the two main parts of the temporal bone visible from the inferior and inside view?
The squamous part and the petrous part.
p.12
Occipital Bone Structure and Function
What happens to the occipital bone when there is more pulling force on the nuchal lines?
More bone is deposited in that area.
p.45
Ethmoid Bone Structure and Functions
What is the primary function of the ethmoid bone?
The ethmoid bone forms part of the nasal cavity and the orbits of the eyes, and it also contributes to the medial wall of the orbit.
p.7
Occipital Bone Structure and Function
Which bones does the occipital bone articulate with?
The occipital bone articulates with the parietal bones, temporal bones, and the sphenoid bone.
p.46
Ethmoid Bone Structure and Functions
What is the primary function of the ethmoid bone?
It forms the medial wall of the orbit and the roof of the nasal cavity.
p.14
Occipital Bone Structure and Function
What is the significance of the groove for the transverse sinuses?
It is a feature of the occipital bone that accommodates the transverse sinuses.
p.46
Ethmoid Bone Structure and Functions
What is the construction of the ethmoid bone like?
It has a spongy/air-filled construction, making it a very light bone.
p.46
Ethmoid Bone Structure and Functions
What part of the nose does the ethmoid bone make up?
The roof of the nose and the division between the two orbits.
p.19
Temporal Bone Anatomy and Functions
What is mastoiditis?
An infection that can result from an unresolved middle ear infection.
p.30
Frontal Bone Structure and Borders
What does the supraorbital margin form?
It forms the superior border of the orbits.
p.9
Cranial and Facial Bones
What interesting fact is noted about the lateral view of the skull?
It displays the greatest number of cranial bones.
p.41
Sphenoid Bone Anatomy and Functions
What is the Sella Turcica in the sphenoid bone?
It is a structure known as the Turkish saddle.
p.10
Occipital Bone Structure and Function
What is the foramen magnum?
The large opening in the occipital bone through which the spinal cord passes as it enters the vertebral column.
p.48
Ethmoid Bone Structure and Functions
What is the role of the cribriform plate in the ethmoid bone?
The cribriform plate allows the passage of the olfactory nerves from the nasal cavity to the brain.
p.37
Sphenoid Bone Anatomy and Functions
What do the greater wings of the sphenoid bone protect?
The frontal lobes of the brain and the pituitary gland.
p.45
Ethmoid Bone Structure and Functions
What is the function of the cribriform plate in the ethmoid bone?
The cribriform plate allows the passage of the olfactory nerves from the nasal cavity to the brain.
p.5
Sutures and Their Clinical Significance
What is one function of fibrous cartilage in the skull?
It absorbs some impact of blows to the skull.
p.38
Sphenoid Bone Anatomy and Functions
Which fossae does the sphenoid bone connect?
It connects the middle cranial fossa and the pterygopalatine fossa.
p.27
Sutures and Their Clinical Significance
What bones are connected by the parietomastoid suture?
The parietal and temporal bones.
p.8
Occipital Bone Structure and Function
Which parts of the brain does the occipital bone cover?
The occipital lobes of the cerebrum and cerebellum.
p.16
Temporal Bone Anatomy and Functions
What is the origin of the term 'temporal' in temporal bones?
It comes from the Latin word 'tempus,' meaning both time and the spot on the head.
p.20
Temporal Bone Anatomy and Functions
Which suture connects the temporal bone to the zygomatic bone?
The zygomaticotemporal suture.
p.40
Sphenoid Bone Anatomy and Functions
Which nerves and structures pass through the middle part of the superior orbital fissure?
Superior and inferior divisions of the oculomotor nerve (CN III), nasociliary nerve, and abducent nerve.
p.40
Sphenoid Bone Anatomy and Functions
What does the medial part of the superior orbital fissure transmit?
Inferior ophthalmic veins and sympathetic nerves arising from the plexus that accompanies the internal carotid artery.
p.28
Frontal Bone Structure and Borders
Where is the frontal bone located?
The frontal bone is located at the front of the skull, forming the forehead.
p.23
Parietal Bone Characteristics
Is it possible for some people to have only one parietal bone?
Yes, some people may have only one parietal bone.
p.28
Frontal Bone Structure and Borders
What are the two main parts of the frontal bone?
The two main parts of the frontal bone are the squamous part (forehead) and the orbital part (roof of the eye sockets).
p.28
Frontal Bone Structure and Borders
What is the significance of the supraorbital foramen in the frontal bone?
The supraorbital foramen allows the passage of the supraorbital nerve and vessels.
p.45
Ethmoid Bone Structure and Functions
Where is the ethmoid bone located?
The ethmoid bone is located at the roof of the nasal cavity, between the two orbits.
p.14
Occipital Bone Structure and Function
Which cranial nerves pass through the jugular foramen?
Cranial nerves IX (glossopharyngeal), X (vagus), and XI (accessory).
p.5
Sutures and Their Clinical Significance
How do sutures function as the brain grows and the skull expands?
They act like an expansion joint, allowing the bone to enlarge evenly.
p.29
Frontal Bone Structure and Borders
What is the origin of the term 'frontal'?
It comes from the Latin word 'frons' meaning 'forehead'.
p.17
Temporal Bone Anatomy and Functions
Which artery and vein are associated with the temporal bone?
The internal carotid artery and the internal jugular vein.
p.24
Parietal Bone Characteristics
Where is the sagittal sulcus located in relation to the parietal bone?
Inside view of the parietal bone.
p.42
Sphenoid Bone Anatomy and Functions
What important structures are associated with the sphenoid bone?
Hypophysis (pituitary gland), hypothalamus, and optic chiasm.
p.11
Sutures and Their Clinical Significance
Which suture connects the occipital bone to the petrous part of the temporal bone?
The petrous-basilar suture.
p.23
Parietal Bone Characteristics
How many parietal bones does a typical person have?
One on each side of the skull.
p.4
Cranial and Facial Bones
Which bones form the skeleton of the face?
The vomer, inferior nasal conchae (2), nasal bones (2), maxilla (2), mandible, palatine bones (2), zygomatic bones (2), and lacrimal bones (2).
p.33
Frontal Bone Structure and Borders
Which suture connects the frontal bone to the zygomatic bones?
Zygomaticofrontal suture.
p.5
Sutures and Their Clinical Significance
What type of joints are sutures in the skull?
Synarthrodial (immovable) joints.
p.35
Sphenoid Bone Anatomy and Functions
What sinuses are contained within the sphenoid bone?
The sphenoid bone contains the sphenoidal sinuses.
p.29
Frontal Bone Structure and Borders
What does the nasal part of the frontal bone articulate with and contribute to?
It articulates with the lacrimal bones, nasal bones, and maxilla, and contributes to the roof of the nose.
p.17
Temporal Bone Anatomy and Functions
What are the four regions of the temporal bones?
Squamous, mastoid, petrous, and tympanic regions.
p.38
Sphenoid Bone Anatomy and Functions
What part of the orbit does the sphenoid bone form?
It forms the back part of the roof of the orbit.
p.38
Sphenoid Bone Anatomy and Functions
What structures are associated with the pterygoid canal in the sphenoid bone?
Nerve of pterygoid canal, artery of the pterygoid canal, and vein of the pterygoid canal (Vidian Nerve, Vidian Artery, and Vidian Vein).
p.13
Occipital Bone Structure and Function
What are the nuchal lines?
The nuchal lines are ridges on the occipital bone where muscles and ligaments attach.
p.44
Sphenoid Bone Anatomy and Functions
Which nerve is associated with the sphenoid bone?
The nerve of the pterygoid canal.
p.6
Sutures and Their Clinical Significance
What is craniosynostosis?
A condition where premature fusion of sutures results in an abnormal head shape.
p.11
Sutures and Their Clinical Significance
Which suture connects the occipital bone to the back of the sphenoid bone body?
The sphenobasilar suture.
p.18
Temporal Bone Anatomy and Functions
What is the function of the squamous part of the temporal bone?
The squamous part forms the front and upper part of the temporal bone, contributing to the side of the skull.
p.7
Occipital Bone Structure and Function
Where is the occipital bone located?
The occipital bone is located at the back and base of the skull.
p.35
Sphenoid Bone Anatomy and Functions
What are the key functions of the sphenoid bone?
The sphenoid bone helps form the base of the cranium, the sides of the skull, and the floors and sides of the orbits. It also contains the sphenoidal sinuses.
p.35
Sphenoid Bone Anatomy and Functions
What structures does the sphenoid bone help form?
The sphenoid bone helps form the base of the cranium, the sides of the skull, and the floors and sides of the orbits.
p.7
Occipital Bone Structure and Function
What is the significance of the occipital condyles?
The occipital condyles are two rounded protrusions that articulate with the first cervical vertebra (atlas), allowing for nodding movements of the head.
p.14
Occipital Bone Structure and Function
What major vein passes through the jugular foramen?
The internal jugular vein.
p.37
Sphenoid Bone Anatomy and Functions
What are the main parts of the sphenoid bone?
1. Body, 2. Greater wings (2), 3. Lesser wings (2), and 4. Pterygoid processes.
p.27
Sutures and Their Clinical Significance
Which bones are connected by the squamous suture?
The parietal and temporal bones.
p.47
Ethmoid Bone Structure and Functions
What is the function of the ethmoid bone in the skull?
The ethmoid bone directs air upward for olfactory function.
p.21
Cranial and Facial Bones
What are the two main categories of bones in the skull?
Cranial bones and facial bones.
p.40
Sphenoid Bone Anatomy and Functions
What structures are transmitted through the lateral part of the superior orbital fissure?
Superior ophthalmic vein, lacrimal nerve, frontal nerve, trochlear nerve (CN IV), and recurrent meningeal branch of lacrimal artery.
p.22
Parietal Bone Characteristics
What is the origin of the word 'parietal'?
It comes from the Latin word 'paries' (-ietis) meaning wall.
p.3
Neurocranium and Viscerocranium Functions
What structures does the neurocranium protect?
The neurocranium protects the brain, brain stem, and cerebellum.
p.12
Occipital Bone Structure and Function
What is the structure of the nuchal lines on the occipital bone?
They are four curved lines (protuberances) found on the external surface of the occipital bone.
p.35
Sphenoid Bone Anatomy and Functions
Where is the sphenoid bone located?
The sphenoid bone is located at the base of the skull, in front of the temporal bones and basilar part of the occipital bone.
p.14
Occipital Bone Structure and Function
What is the falx cerebri?
A large, crescent-shaped fold of dura mater that descends vertically in the longitudinal fissure between the cerebral hemispheres of the brain.
p.48
Ethmoid Bone Structure and Functions
What is the perpendicular plate of the ethmoid bone responsible for?
The perpendicular plate forms the superior part of the nasal septum.
p.45
Ethmoid Bone Structure and Functions
What are the key structures of the ethmoid bone?
The key structures of the ethmoid bone include the cribriform plate, perpendicular plate, and ethmoidal labyrinth.
p.29
Frontal Bone Structure and Borders
Where is the orbital part of the frontal bone located and what does it form?
It is inferior to the squamous region and forms the superior border of the orbit.
p.37
Sphenoid Bone Anatomy and Functions
Where is the sphenoid bone situated?
Within the anterior regions of the skull, forming the rear of the orbit.
p.38
Sphenoid Bone Anatomy and Functions
Through which foramen does the maxillary branch (V2) of the trigeminal nerve (CN V) exit the skull?
Via the pterygopalatine fossa/foramen rotundum.
p.3
Cranial and Facial Bones
Which bones make up the neurocranium?
The neurocranium is made up of the occipital bone, temporal bones (2), parietal bones (2), sphenoid bone, ethmoid bone, and frontal bone.
p.28
Frontal Bone Structure and Borders
What structures does the frontal bone articulate with?
The frontal bone articulates with the parietal bones, nasal bones, zygomatic bones, sphenoid bone, and maxillae.
p.48
Ethmoid Bone Structure and Functions
What are the key structures of the ethmoid bone?
The key structures of the ethmoid bone include the cribriform plate, perpendicular plate, and ethmoidal labyrinth.
p.37
Sphenoid Bone Anatomy and Functions
What is the function of the sphenoid bone?
The sphenoid bone articulates with every other cranial bone, forms part of the orbit and nasal cavity, contains the sphenoidal sinuses, and protects the frontal lobes of the brain and pituitary gland.
p.48
Ethmoid Bone Structure and Functions
What is the ethmoidal labyrinth?
The ethmoidal labyrinth consists of a series of air cells that form part of the paranasal sinuses.
What are the key features of the skull?
Cranial foramina, spaces, and communications.
p.45
Ethmoid Bone Structure and Functions
What is the ethmoidal labyrinth?
The ethmoidal labyrinth consists of a series of air cells that form part of the paranasal sinuses.
p.46
Ethmoid Bone Structure and Functions
Which bones does the ethmoid bone articulate with in the viscerocranium?
Nasal bones (2), maxillae (2), lacrimals (2), palatines (2), inferior nasal conchae (2), and vomer.
p.38
Sphenoid Bone Anatomy and Functions
Which nerves pass through the sphenoid bone?
1. Superior and inferior divisions of oculomotor nerve (III), 2. Trochlear nerve (IV), 3. Lacrimal, frontal, and nasociliary branches of ophthalmic (V1), 4. Abducens nerve (VI).
p.27
Sutures and Their Clinical Significance
Which bones are connected by the lambdoid suture?
The parietal and occipital bones.
p.26
Parietal Bone Characteristics
Which sutures border the parietal bone?
Coronal suture, Lambdoid suture, and Squamosal suture.
p.6
Sutures and Their Clinical Significance
What are the main sutures in the skull?
Coronal suture, sagittal suture, lambdoid suture, and squamous suture.
p.49
Ethmoid Bone Structure and Functions
What is the role of the ciliated mucous membrane and shallow blood vessels in the ethmoid bone?
They clean, warm, and moisten the air.
p.7
Occipital Bone Structure and Function
What is the primary function of the occipital bone?
The occipital bone forms the back and base of the skull, providing structural support and protection for the brain.
p.18
Temporal Bone Anatomy and Functions
What is the significance of the petrous part of the temporal bone?
The petrous part houses the structures of the inner ear, including the cochlea and vestibular system.
p.14
Occipital Bone Structure and Function
Which sinuses are contained in the falx cerebri?
The superior sagittal sinus and inferior sagittal sinus.
p.33
Frontal Bone Structure and Borders
Besides the main sutures, which other bones does the frontal bone communicate with?
Lacrimal, maxillary, and ethmoid bones.
p.39
Sphenoid Bone Anatomy and Functions
Which branch of the ophthalmic nerve passes through the superior orbital fissure?
The Lacrimal, Frontal, and Nasociliary branches of the ophthalmic nerve (V1).
p.39
Sphenoid Bone Anatomy and Functions
Which cranial nerve represented by 'T' in the mnemonic passes through the superior orbital fissure?
The Trochlear nerve (IV).
p.17
Temporal Bone Anatomy and Functions
What is significant about the petrous part of the temporal bone?
It is the hardest part of the skull and contains many bones involved in chewing.
p.48
Ethmoid Bone Structure and Functions
What is the primary function of the ethmoid bone?
The ethmoid bone forms part of the nasal cavity and the orbits of the eyes.
p.31
Frontal Bone Structure and Borders
What is the function of the nasal part of the frontal bone?
The nasal part articulates with the nasal bones and the frontal processes of the maxillae.
p.41
Sphenoid Bone Anatomy and Functions
Where is the Optic groove located in the sphenoid bone?
It is a groove anterior to the Tuberculum sellae.
p.29
Frontal Bone Structure and Borders
What are the three parts of the frontal bone?
Squamous, Orbital, and Nasal.
What are the different views of the skull?
Anterior, lateral, superior, posterior, and inferior.
p.17
Temporal Bone Anatomy and Functions
What are the main functions of the temporal bones?
Protection (temporal lobes and inner ear), attachment site for muscles (such as tongue muscles, sternocleidomastoid), and passage for the lower seven cranial nerves and major vessels to and from the brain.
p.17
Temporal Bone Anatomy and Functions
Where are the temporal bones located?
At the base and sides of the skull, lateral to the temporal lobes of the brain.
p.46
Ethmoid Bone Structure and Functions
Which bones does the ethmoid bone articulate with in the neurocranium?
Frontal and sphenoid bones.
p.27
Sutures and Their Clinical Significance
Which bones are connected by the coronal suture?
The parietal and frontal bones.
p.48
Ethmoid Bone Structure and Functions
Where is the ethmoid bone located?
The ethmoid bone is located at the roof of the nasal cavity, between the two orbits.
p.1
Cranial and Facial Bones
Which bones are paired in the skull?
Temporal bones, parietal bones, inferior nasal conchae, nasal bones, maxilla, palatine bones, zygomatic bones, and lacrimal bones.
p.29
Frontal Bone Structure and Borders
What is the function of the squamous part of the frontal bone?
It forms the main region of the forehead.
p.46
Ethmoid Bone Structure and Functions
What are the key structures formed by the ethmoid bone?
Part of the orbital complex, floor of the cranium, roof of the nasal cavity, and part of the nasal septum.
p.17
Temporal Bone Anatomy and Functions
What is the function of the external auditory canal?
It is an air-filled tubular space that extends from the external ear to the tympanic membrane.
p.38
Sphenoid Bone Anatomy and Functions
Which veins and fibers pass through the sphenoid bone?
1. Superior and inferior divisions of ophthalmic vein, 2. Sympathetic fibers from cavernous plexus.
p.27
Sutures and Their Clinical Significance
What is the pterion and which bones meet there?
The pterion is the region where the parietal, sphenoid, frontal, and temporal bones meet.
p.39
Sphenoid Bone Anatomy and Functions
What mnemonic can be used to remember the nerves passing through the superior orbital fissure?
Live Frankly To See Absolutely No Insult.
p.39
Sphenoid Bone Anatomy and Functions
Which nerves are represented by the mnemonic 'Live Frankly To See Absolutely No Insult'?
Lacrimal and Frontal divisions of the ophthalmic nerve (V1), Trochlear nerve (IV), Superior division of the oculomotor nerve (III), Abducens nerve (VI), Nasociliary branch of the ophthalmic nerve (V1), and Inferior Division of the oculomotor nerve (III).
p.5
Sutures and Their Clinical Significance
What happens to the ears and nose in adulthood?
They continue to grow due to cartilage, which never stops growing.
p.37
Sphenoid Bone Anatomy and Functions
What does the sphenoid bone resemble in shape?
A butterfly, with wing-like processes.
p.17
Temporal Bone Anatomy and Functions
Which bones does the temporal bone articulate with?
The mandible and the temporal process of the zygomatic bone.
