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Loss of ___ is a characteristic symptom associated with ulnar nerve injury.
pronation
The lateral cord gives rise to the ___ nerve, which primarily innervates the pectoralis major.
lateral pectoral
1/173
p.9
Nerve Injuries and Neuropathies

Loss of ___ is a characteristic symptom associated with ulnar nerve injury.

pronation

p.4
Main Terminal Branches of the Brachial Plexus

The lateral cord gives rise to the ___ nerve, which primarily innervates the pectoralis major.

lateral pectoral

p.3
Specific Nerves: Axillary, Radial, Median, and Ulnar

The long thoracic nerve supplies the ___ muscle.

serratus anterior

p.9
Nerve Injuries and Neuropathies

The wasted hypothenar eminence and palm are indicative of ___ nerve injury.

ulnar

p.8
Specific Nerves: Axillary, Radial, Median, and Ulnar

The median nerve innervates all of the anterior muscles of the forearm except the flexor carpi ___ and the ulnar half of the flexor digitorum ___.

ulnaris, profundus

p.1
Functions of the Brachial Plexus

The Brachial Plexus provides sensory innervation to skin and deep structures, as well as ___ innervation to muscles.

motor

p.3
Specific Nerves: Axillary, Radial, Median, and Ulnar

The dorsal scapular nerve is a branch of the ___ root.

C5

p.9
Nerve Injuries and Neuropathies

In claw hand, the ring and little fingers are hyperextended at the metacarpophalangeal joints and ___ at the interphalangeal joints.

flexed

p.8
Specific Nerves: Axillary, Radial, Median, and Ulnar

In the cubital fossa, the median nerve gives rise to the ___ nerve.

anterior interosseous

p.3
Anatomy of Brachial Plexus Trunks

The suprascapular nerve originates from the ___ trunk.

superior

p.8
Specific Nerves: Axillary, Radial, Median, and Ulnar

The median nerve divides into the ___ digital nerves.

palmar

p.5
Main Terminal Branches of the Brachial Plexus

In the forearm, the musculocutaneous nerve becomes the ___ nerve.

lateral antebrachial cutaneous

p.4
Divisions and Cords of the Brachial Plexus

Each trunk of the brachial plexus divides into ___ branches within the posterior triangle of the neck.

two

p.6
Nerve Injuries and Neuropathies

The radial nerve winds around the ___ neck of the humerus.

surgical

p.10
Functions of the Brachial Plexus

The median nerve innervates the lateral 2 ___, while the ulnar nerve innervates the medial 2 ___.

lumbricals

p.6
Functions of the Brachial Plexus

The radial nerve divides into a superficial sensory branch and a ___ motor branch.

deep

p.5
Nerve Injuries and Neuropathies

Loss of function in the extensor muscles of the arm, forearm, and hand results in ___ drop.

wrist

p.7
Nerve Injuries and Neuropathies

Weakness in ___ and ___ of the hand can indicate nerve injury.

abduction, adduction

p.2
Divisions and Cords of the Brachial Plexus

The lower division of the anterior division forms the ___ cord.

MEDIAL

p.2
Specific Nerves: Axillary, Radial, Median, and Ulnar

The dorsal scapular nerve innervates the levator scapulae and ___ muscles.

Rhomboides

p.10
Specific Nerves: Axillary, Radial, Median, and Ulnar

The ulnar nerve enters the forearm by passing between the two heads of the ___ muscle.

flexor carpi ulnaris

p.3
Anatomy of Brachial Plexus Trunks

The roots of the long thoracic nerve are ___, ___, and ___.

C5, C6, C7

p.1
Anatomy of Brachial Plexus Trunks

The Brachial Plexus is enclosed with the ___ artery and vein in the axillary sheath.

axillary

p.3
Nerve Injuries and Neuropathies

Injury to the suprascapular nerve leads to wasting of the ___ and ___ muscles.

supraspinatus, infraspinatus

p.10
Nerve Injuries and Neuropathies

Injury to C5 and C6 can result in the ___ tip position.

waiter’s

p.7
Nerve Injuries and Neuropathies

Fracture in the humeral shaft is associated with injury to the ___ nerve.

radial

p.3
Specific Nerves: Axillary, Radial, Median, Ulnar

What muscles does the dorsal scapular nerve innervate?

Rhomboid major, rhomboid minor, and levator scapulae.

p.4
Divisions and Cords of the Brachial Plexus

One division of the trunk moves ___ (toward the front of the body) and the other moves ___ (towards the back of the body).

anteriorly, posteriorly

p.4
Main Terminal Branches of the Brachial Plexus

The musculocutaneous nerve innervates the flexor muscles of the ___ compartment of the arm.

anterior

p.4
Main Terminal Branches of the Brachial Plexus

The posterior cord gives rise to the ___ nerve, which innervates the teres minor and deltoid muscles.

axillary

p.8
Specific Nerves: Axillary, Radial, Median, and Ulnar

The median nerve enters the palm of the hand through the carpal tunnel deep to the ___ retinaculum.

flexor

p.1
Functions of the Brachial Plexus

The Brachial Plexus influences the diameters of blood vessels via ___ vasomotor nerves.

sympathetic

p.5
Nerve Injuries and Neuropathies

Injury to the musculocutaneous nerve can lead to weakness in ___ and flexion of the forearm.

supination

p.7
Specific Nerves: Axillary, Radial, Median, and Ulnar

The median nerve enters the forearm between the humeral and ulnar heads of the ___ muscle.

pronator teres

p.3
Anatomy of Brachial Plexus Trunks

What are the roots of the long thoracic nerve?

C5, C6, and C7.

p.2
Divisions and Cords of the Brachial Plexus

What are the three cords of the brachial plexus named for?

Their position in relation to the axillary artery.

p.2
Divisions and Cords of the Brachial Plexus

What forms the lateral cord of the brachial plexus?

The anterior division of the superior and middle trunks.

p.7
Specific Nerves: Axillary, Radial, Median, Ulnar

Where does the median nerve run in the arm?

Anteromedial aspect of the arm.

p.1
Anatomy of Brachial Plexus Trunks

What mnemonic can help remember the components of the Brachial Plexus?

'Robert Taylor Drinks Cold Beer' or 'Remember To Drink Cold Beer'.

p.2
Specific Nerves: Axillary, Radial, Median, Ulnar

What muscles does the dorsal scapular nerve innervate?

Levator scapulae, rhomboides major, and rhomboides minor.

p.4
Nerve Injuries and Neuropathies

What are the symptoms of an injury to the musculocutaneous nerve?

Weakness of supination and flexion of the forearm, and loss of sensation on the lateral side of the forearm.

p.10
Specific Nerves: Axillary, Radial, Median, and Ulnar

The ulnar nerve enters the hand superficial to the ___ and lateral to the pisiform bone.

flexor retinaculum

p.1
Brachial Plexus Overview

The Brachial Plexus is a major nerve network supplying the ___ limb.

upper

p.10
Nerve Injuries and Neuropathies

The long thoracic nerve is identified deep to the ___ vein.

axillary

p.4
Main Terminal Branches of the Brachial Plexus

The radial nerve innervates all muscles of the ___ arm and forearm.

posterior

p.6
Clinical Implications of Brachial Plexus Injuries

Numbness in radial nerve palsy occurs over the ___ dorsal interosseous muscles.

1st

p.1
Anatomy of Brachial Plexus Trunks

The largest rami of the Brachial Plexus are ___ and ___.

C7, C8

p.7
Nerve Injuries and Neuropathies

Fracture in the humeral surgical neck is associated with injury to the ___ nerve.

axillary

p.2
Divisions and Cords of the Brachial Plexus

The anterior division of the superior and middle trunks forms the ___ cord.

LATERAL

p.5
Main Terminal Branches of the Brachial Plexus

What are the main terminal branches of the brachial plexus?

Musculocutaneous nerve, Axillary nerve, Radial nerve, Median nerve, Ulnar nerve.

p.9
Anatomy of Brachial Plexus Trunks

Where does the ulnar nerve run in the forearm?

Down the medial aspect of the forearm.

p.7
Nerve Injuries and Neuropathies

Which nerve is commonly injured in fractures of the surgical neck of the humerus?

Axillary nerve.

p.9
Common Injuries and Symptoms Related to Brachial Plexus

What is the difference between claw hand and sign of benediction?

In sign of benediction, you can still fold the medial 2 lumbricals; in claw hand, the medial 2 lumbricals are affected.

p.9
Common Injuries and Symptoms Related to Brachial Plexus

What happens to the hypothenar eminence in ulnar nerve injury?

It becomes wasted.

p.1
Anatomy of Brachial Plexus Trunks

Which rami are the largest and smallest in the Brachial Plexus?

Largest: C7 & C8; Smallest: C5 & T1.

p.9
Nerve Injuries and Neuropathies

The ulnar nerve descends behind the medial epicondyle in a groove known as the ___ tunnel.

cubital

p.4
Nerve Injuries and Neuropathies

Injury to the musculocutaneous nerve leads to weakness of ___ and ___ of the forearm.

supination, flexion

p.1
Anatomy of Brachial Plexus Trunks

The Brachial Plexus begins in the ___ and extends into the axilla.

neck

p.6
Clinical Implications of Brachial Plexus Injuries

Radial nerve palsy is caused by compression of the radial nerve in the ___.

axilla

p.10
Nerve Injuries and Neuropathies

The intercostobrachial nerve appears beneath the second ___.

rib

p.7
Nerve Injuries and Neuropathies

The radial nerve is commonly injured in fractures of the ___ due to its passage through the spiral groove.

humeral shaft

p.1
Common Questions and Tips for Brachial Plexus Anatomy

The mnemonic for remembering the components of the Brachial Plexus is '___ ___ ___ ___ ___'.

Robert Taylor Drinks Cold Beer

p.2
Anatomy of Brachial Plexus Trunks

The trunk that corresponds to C7 is known as the ___ trunk.

MIDDLE

p.2
Divisions and Cords of the Brachial Plexus

The posterior divisions unite to form the ___ cord.

POSTERIOR

p.9
Nerve Injuries and Neuropathies

What are the main symptoms of ulnar nerve injury?

Loss of pronation, loss of opposition of the thumb, and characteristic flattening of the thenar eminence.

p.5
Nerve Injuries and Neuropathies

What is crutch palsy?

A condition caused by pressure from the crosspiece of a crutch, resulting in arm paralysis due to radial nerve pressure.

p.5
Main Terminal Branches of the Brachial Plexus

What does the musculocutaneous nerve innervate?

The anterior compartment of the arm, including Biceps brachii, Brachialis, and Coracobrachialis.

p.4
Anatomy of Brachial Plexus Trunks

What happens to each trunk in the brachial plexus?

Each trunk divides into two branches within the posterior triangle of the neck.

p.9
Common Injuries and Symptoms Related to Brachial Plexus

What functions are lost due to ulnar nerve injury?

Loss of abduction and adduction of fingers.

p.10
Modified Radical Mastectomy and Nerve Considerations

Where is the long thoracic nerve identified during surgery?

Deep to the axillary vein.

p.6
Common Injuries and Symptoms Related to Brachial Plexus

How do patients with Radial Nerve Palsy present?

Loss of extension of fingers, thumb, and wrist; numbness over the 1st dorsal interosseous muscles.

p.9
Anatomy of Brachial Plexus Trunks

The ulnar nerve is completely formed by the ___ cord of the brachial plexus.

medial

p.9
Nerve Injuries and Neuropathies

Fractures of the medial epicondyle may damage the ulnar nerve, resulting in a ___ hand.

claw

p.6
Anatomy of Brachial Plexus Trunks

The radial nerve occupies the musculospiral groove with the ___ artery.

profunda brachii

p.3
Nerve Injuries and Neuropathies

Injury to the long thoracic nerve can cause ___ of the serratus anterior.

paralysis

p.10
Nerve Injuries and Neuropathies

The thoracodorsal nerve is adjacent to the deep ___ vein and artery.

subscapular

p.5
Main Terminal Branches of the Brachial Plexus

The musculocutaneous nerve innervates the anterior compartment of the arm, including ___, brachialis, and coracobrachialis.

biceps brachii

p.7
Nerve Injuries and Neuropathies

The axillary nerve is commonly injured in fractures of the ___ due to its proximity.

surgical neck

p.7
Specific Nerves: Axillary, Radial, Median, and Ulnar

At the elbow, the median nerve lies medial to the brachial artery on the ___ muscle.

brachialis

p.2
Anatomy of Brachial Plexus Trunks

What are the roots of the brachial plexus?

C5, C6, C7, C8, and T1.

p.1
Anatomy of Brachial Plexus Trunks

Where does the Brachial Plexus begin and extend?

It begins in the neck and extends into the axilla.

p.9
Common Injuries and Symptoms Related to Brachial Plexus

What injury can occur due to fractures of the medial epicondyle?

Damage to the ulnar nerve, resulting in a claw hand.

p.10
Specific Nerves: Axillary, Radial, Median, Ulnar

Where does the ulnar nerve enter the hand?

Superficial to the flexor retinaculum and lateral to the pisiform bone.

p.4
Divisions and Cords of the Brachial Plexus

How many posterior and anterior nerve fibers are formed from the divisions?

3 posterior nerve fibers and 3 anterior nerve fibers.

p.7
Specific Nerves: Axillary, Radial, Median, Ulnar

Which muscles does the median nerve lie between as it enters the forearm?

Between flexor digitorum superficialis and flexor digitorum profundus.

p.4
Main Terminal Branches of the Brachial Plexus

What muscles are innervated by the axillary nerve?

Teres minor and deltoid muscles.

p.6
Specific Nerves: Axillary, Radial, Median, and Ulnar

The lateral brachial cutaneous nerve arises from the ___ nerve.

Radial

p.6
Main Terminal Branches of the Brachial Plexus

The radial nerve is the ___ branch of the brachial plexus.

largest

p.4
Main Terminal Branches of the Brachial Plexus

The lateral antebrachial cutaneous nerve provides cutaneous innervation to the ___ upper forearm.

lateral

p.10
Nerve Injuries and Neuropathies

Injury to the long thoracic nerve results in ___ of the scapula.

winging

p.5
Main Terminal Branches of the Brachial Plexus

The five main terminal branches of the brachial plexus include the musculocutaneous nerve, axillary nerve, radial nerve, median nerve, and ___ nerve.

ulnar

p.8
Nerve Injuries and Neuropathies

Sensory deficits of median nerve neuropathy affect the lateral ½ of the palm and the palmar aspect of the lateral ___ and ½ fingers.

3

p.2
Anatomy of Brachial Plexus Trunks

C8 and T1 combine to form the ___ trunk.

INF

p.2
Specific Nerves: Axillary, Radial, Median, and Ulnar

The dorsal scapular nerve arises from the proximal segment of ___.

C5

p.3
Specific Nerves: Axillary, Radial, Median, Ulnar

What nerve passes posteriorly and pierces the scalenus medius?

Dorsal scapular nerve.

p.1
Anatomy of Brachial Plexus Trunks

What major arteries and veins enclose the Brachial Plexus?

The Axillary artery and vein.

p.9
Common Injuries and Symptoms Related to Brachial Plexus

What is a characteristic feature of claw hand?

Ring and little fingers are hyperextended at the metacarpophalangeal joints and flexed at the interphalangeal joints.

p.10
Functions of the Brachial Plexus

Which nerve innervates the medial two lumbricals?

Ulnar nerve.

p.1
Common Injuries and Symptoms Related to Brachial Plexus

What is a commonly encountered nerve injury during modified radical mastectomy?

Long Thoracic Nerve Injury.

p.4
Main Terminal Branches of the Brachial Plexus

What muscles are innervated by the upper subscapular nerve?

Subscapularis muscle.

p.8
Functions of the Brachial Plexus

What areas does the median nerve innervate in the hand?

The lateral two lumbricals, skin of the lateral side of the palm, and the palmar side of the lateral 3 and 1/2 fingers, and the dorsal side of the index, middle, and 1/2 of the ring finger.

p.4
Divisions and Cords of the Brachial Plexus

The divisions form ___ posterior nerve fibers and ___ anterior nerve fibers.

3, 3

p.10
Specific Nerves: Axillary, Radial, Median, and Ulnar

The ulnar nerve terminates by dividing into superficial and deep branches at the root of the ___ eminence.

hypothenar

p.5
Nerve Injuries and Neuropathies

Injuries to the ___ cord can result in crutch palsy.

posterior

p.9
Nerve Injuries and Neuropathies

The sign of ___ indicates that the medial 2 lumbricals can still fold despite ulnar nerve injury.

benediction

p.6
Nerve Injuries and Neuropathies

Patients with radial nerve palsy present with loss of extension of fingers, thumb, and ___.

wrist

p.1
Functions of the Brachial Plexus

The greatest sensory contribution to the Brachial Plexus comes from ___.

C7

p.7
Specific Nerves: Axillary, Radial, Median, and Ulnar

The median nerve is located between the ___ and ___ muscles in the forearm.

flexor digitorum superficialis, flexor digitorum profundus

p.2
Anatomy of Brachial Plexus Trunks

What is the division of the superior trunk of the brachial plexus?

Divides 2–3 cm above the clavicle.

p.3
Nerve Injuries and Neuropathies

What condition is caused by injury to the long thoracic nerve?

Winging of the scapula.

p.9
Anatomy of Brachial Plexus Trunks

From which part of the brachial plexus is the ulnar nerve formed?

Completely formed by the medial cord of the brachial plexus.

p.3
Nerve Injuries and Neuropathies

What is the consequence of injury to the suprascapular nerve?

Wasting of supraspinatus and infraspinatus muscles, leading to no abduction and external rotation of the shoulder.

p.3
Anatomy of Brachial Plexus Trunks

Which trunk of the brachial plexus has branches?

Superior trunk.

p.2
Functions of the Brachial Plexus

What innervates the postaxial extensor musculature?

The posterior divisions and posterior cord.

p.6
Brachial Plexus Overview

What is the largest branch of the brachial plexus?

Radial nerve.

p.4
Main Terminal Branches of the Brachial Plexus

What muscles are innervated by the musculocutaneous nerve?

Biceps brachii, brachialis, and coracobrachialis (BBC muscles).

p.6
Nerve Injuries and Neuropathies

What causes Radial Nerve Palsy?

Compression of the radial nerve in the axilla.

p.4
Main Terminal Branches of the Brachial Plexus

What does the radial nerve innervate?

All muscles of the posterior arm and forearm.

p.8
Nerve Injuries and Neuropathies

What are some motor deficits associated with median nerve neuropathy?

Weak wrist flexion, pronation, papal benediction sign, and ape-like hand.

p.3
Specific Nerves: Axillary, Radial, Median, and Ulnar

The dorsal scapular nerve innervates the ___ muscle.

rhomboid

p.8
Specific Nerves: Axillary, Radial, Median, and Ulnar

The median nerve becomes superficial by passing between the tendons of the flexor digitorum ___ and flexor carpi ___.

superficialis, radialis

p.5
Nerve Injuries and Neuropathies

Crutch palsy is caused by pressure from the crosspiece of a crutch, leading to paralysis of the ___ nerve.

radial

p.1
Anatomy of Brachial Plexus Trunks

Almost all branches of the Brachial Plexus arise in the axilla after it crosses the ___ rib.

first

p.3
Anatomy of Brachial Plexus Trunks

The subclavian nerve descends in front of the brachial plexus and ___ artery.

subclavian

p.8
Nerve Injuries and Neuropathies

Ape-like hand is characterized by a flattened ___ eminence due to damage of the recurrent branch of the median nerve.

thenar

p.7
Specific Nerves: Axillary, Radial, Median, and Ulnar

The median nerve runs along the ___ aspect of the arm.

anteromedial

p.3
Specific Nerves: Axillary, Radial, Median, Ulnar

What muscle does the long thoracic nerve supply?

Serratus anterior.

p.7
Nerve Injuries and Neuropathies

Where does the radial nerve commonly get injured?

In fractures of the humeral shaft.

p.7
Nerve Injuries and Neuropathies

What is the mnemonic for remembering nerve injuries related to humeral fractures?

Fracture in Humeral shaft = Radial nerve; Fracture in Humeral surgical neck = Axillary nerve.

p.6
Nerve Injuries and Neuropathies

Where does the radial nerve commonly get injured?

Around the surgical neck of the humerus.

p.7
Specific Nerves: Axillary, Radial, Median, Ulnar

How does the median nerve enter the forearm?

Between the humeral and ulnar heads of the pronator teres muscle.

p.6
Main Terminal Branches of the Brachial Plexus

What are the two branches of the radial nerve?

Superficial sensory branch and deep motor branch (posterior interosseous nerve).

p.8
Specific Nerves: Axillary, Radial, Median, Ulnar

What nerve does the median nerve give rise to in the cubital fossa?

The anterior interosseous nerve.

p.8
Nerve Injuries and Neuropathies

What sensory deficits are associated with median nerve neuropathy?

Lateral ½ of the palm and palmar aspect of the lateral 3 and ½ fingers.

p.8
Nerve Injuries and Neuropathies

Motor deficits of median nerve neuropathy include weak wrist ___ and ___ sign.

flexion, papal benediction

p.5
Specific Nerves: Axillary, Radial, Median, and Ulnar

The axillary nerve innervates the teres minor and ___ muscle.

deltoid

p.2
Anatomy of Brachial Plexus Trunks

The roots C5 and C6 form the ___ trunk.

SUP

p.5
Common Injuries and Symptoms Related to Brachial Plexus

What is wrist drop?

Loss of function in arm, forearm, and hand extensor muscles due to radial nerve injury.

p.5
Nerve Injuries and Neuropathies

What happens when the musculocutaneous nerve is injured?

Weakness of supination, weakness of flexion of the forearm, and loss of sensation on the lateral side.

p.4
Anatomy of Brachial Plexus Trunks

What are the two directions in which the divisions of the brachial plexus move?

One division moves anteriorly and the other posteriorly.

p.2
Main Terminal Branches of the Brachial Plexus

Which nerves directly stem from the roots of the brachial plexus?

Dorsal scapular nerve and long thoracic nerve.

p.10
Nerve Injuries and Neuropathies

What is a common result of long thoracic nerve injury?

Winging of the scapula.

p.4
Main Terminal Branches of the Brachial Plexus

What branch of the musculocutaneous nerve provides cutaneous innervation to the lateral upper forearm?

Lateral antebrachial cutaneous nerve.

p.8
Main Terminal Branches of the Brachial Plexus

What does the median nerve divide into in the palm?

The palmar digital nerves.

p.8
Nerve Injuries and Neuropathies

Median nerve neuropathy may be caused by a supracondylar fracture or compression in the ___ tunnel.

carpal

p.2
Anatomy of Brachial Plexus Trunks

The divisions of the superior trunk can be palpated in the ___ fossa.

SUPRACLAVICULAR

p.7
Nerve Injuries and Neuropathies

What is a common symptom of radial nerve injury?

Weakness in abduction and adduction of the hand.

p.6
Specific Nerves: Axillary, Radial, Median, Ulnar

What nerve gives rise to the lateral brachial cutaneous nerve?

Radial nerve.

p.1
Anatomy of Brachial Plexus Trunks

Which roots of the Brachial Plexus have the greatest sensory contribution?

C7.

p.10
Specific Nerves: Axillary, Radial, Median, Ulnar

What are the branches of the ulnar nerve at the root of the hypothenar eminence?

It divides into superficial and deep branches.

p.6
Anatomy of Brachial Plexus Trunks

What anatomical structure does the radial nerve occupy?

Musculospiral/radial groove of the radius.

p.8
Specific Nerves: Axillary, Radial, Median, Ulnar

What structure does the median nerve pass between to become superficial?

The tendons of the flexor digitorum superficialis and flexor carpi radialis.

p.4
Main Terminal Branches of the Brachial Plexus

What muscle does the thoracodorsal nerve innervate?

Latissimus dorsi muscle.

p.4
Main Terminal Branches of the Brachial Plexus

What muscles are innervated by the lower subscapular nerve?

Subscapularis and teres major muscles.

p.2
Anatomy of Brachial Plexus Trunks

Where can the suprascapular nerve be palpated?

In the supraclavicular fossa.

p.1
Functions of the Brachial Plexus

What is the primary function of the Brachial Plexus?

To supply sensory and motor innervation to the upper limb.

p.9
Nerve Injuries and Neuropathies

What is the 'funny bone'?

The spot at the back of your elbow where the ulnar nerve rests against the humerus.

p.10
Specific Nerves: Axillary, Radial, Median, Ulnar

How does the ulnar nerve enter the forearm?

By passing between the two heads of the flexor carpi ulnaris.

p.5
Main Terminal Branches of the Brachial Plexus

What is the lateral antebrachial cutaneous nerve?

The continuation of the musculocutaneous nerve in the forearm, providing cutaneous innervation to the lateral upper forearm.

p.1
Functions of the Brachial Plexus

What type of innervation do sympathetic vasomotor nerves provide?

They influence the diameters of blood vessels.

p.2
Brachial Plexus Overview

What is the correct order of the brachial plexus?

Roots, trunks, divisions, cords, branches.

p.10
Nerve Injuries and Neuropathies

What position is associated with injuries to C5 and C6 nerves?

Waiter’s tip position, where the limb hangs by the side in medial rotation.

p.8
Common Injuries and Symptoms Related to Brachial Plexus

What can cause median nerve neuropathy?

A supracondylar fracture or compression in the carpal tunnel.

p.3
Functions of the Brachial Plexus

What is the function of the serratus anterior muscle?

Protraction and stabilization of the scapula.

p.3
Specific Nerves: Axillary, Radial, Median, Ulnar

What does the subclavian nerve innervate?

Subclavius muscle and sternoclavicular joint.

p.5
Main Terminal Branches of the Brachial Plexus

What does the axillary nerve innervate?

The teres minor and deltoid muscles, as well as the skin overlying the deltoid on the lateral aspect of the shoulder.

p.7
Specific Nerves: Axillary, Radial, Median, Ulnar

Where does the median nerve lie at the elbow?

Medial to the brachial artery on the brachialis muscle.

p.4
Cords of the Brachial Plexus

What does the lateral cord of the brachial plexus give rise to?

3 branches including the lateral pectoral nerve, musculocutaneous nerve, and lateral branch of the median nerve.

p.6
Functions of the Brachial Plexus

What muscles does the radial nerve supply?

All muscles in the posterior compartment of the arm and forearm, including all extensor muscles.

p.10
Modified Radical Mastectomy and Nerve Considerations

What does the intercostobrachial nerve provide sensory innervation to?

The upper inner aspect of the arm.

p.10
Nerve Injuries and Neuropathies

What symptoms indicate long thoracic nerve injury?

Difficulty in raising the arm overhead and scapula protruding posteriorly.

p.8
Anatomy of Brachial Plexus Trunks

How does the median nerve enter the palm of the hand?

Through the carpal tunnel deep to the flexor retinaculum.

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Functions of the Brachial Plexus

Which muscles does the median nerve innervate in the forearm?

All anterior muscles except the flexor carpi ulnaris and the ulnar half of the flexor digitorum profundus.

Study Smarter, Not Harder
Study Smarter, Not Harder