Three semilunar cusps.
Ansa subclavia.
The pointed end of the heart, formed primarily by the left ventricle.
It drains blood from the thoracic wall and empties into the cranial vena cava.
Two major cusps: the septal and parietal cusps.
The dilated terminal end of the great cardiac vein.
The left ventricle and the aorta arising from it.
The surface facing the left thoracic wall where the tips of the two auricles project.
A groove that lies between the atria and ventricles, containing coronary vessels and fat.
It is a groove on the heart's surface that separates the left and right ventricles.
Interlacing muscular bands that strengthen the internal surface of the right auricle.
A muscular strand that extends across the lumen of the ventricle from the septal to the parietal wall.
The left coronary artery is about twice as large as the right.
It collects deoxygenated blood from the heart muscle and drains into the right atrium.
It curves medially around the ligamentum arteriosum and the arch of the aorta, then courses cranially to the larynx.
It carries deoxygenated blood from the right ventricle to the lungs.
They anchor the heart valves and help prevent backflow during contraction.
Left and right pulmonary veins.
It sends postganglionic axons directly to the heart.
It is a remnant of the ductus arteriosus, which connects the pulmonary trunk to the aorta in fetal life.
It regulates blood flow from the left ventricle into the aorta.
It receives blood from the systemic veins and most of the blood from the heart itself.
It is a groove that encircles the heart, marking the boundary between the atria and ventricles.
Muscular irregularities of the interior of the ventricular walls.
It is a remnant of the foramen ovale, which allows blood to bypass the lungs in fetal circulation.
They help to increase the contractility of the atrial walls.
They attach the papillary muscles to the cusps of the heart valves.
At the level of the base of the ear, just caudomedial to the tympanic bulla.
A fibrous connection between the pulmonary trunk and the aorta.
In the paraconal interventricular sulcus.
The left ventricular wall is thicker than the right ventricular wall.
It arises within the thorax as the subclavian artery.
It receives oxygenated blood from the pulmonary veins.
A slitlike depression in the right atrium that was an opening (foramen ovale) in the fetus allowing blood to pass from the right to the left atrium.
It receives deoxygenated blood from the body via the vena cavae.
It regulates blood flow from the right ventricle to the pulmonary trunk.
It connects the ascending aorta to the descending aorta.
Parasympathetic preganglionic axons.
The fibroserous covering of the heart.
The surface facing the right thoracic wall.
It carries oxygenated blood from the heart to the body.
The caudal vena cava, coronary sinus, cranial vena cava, and right atrioventricular orifice.
It carries deoxygenated blood from the upper body to the right atrium.
It directs blood flow from the cranial and caudal vena cava into the right atrium.
The circumflex branch and the paraconal interventricular branch.
From the right sinus of the aorta.
The right subclavian artery.
It faces ventrally, caudally, and usually to the left.
It prevents backflow of blood from the aorta into the left ventricle.
Fibrous cords that connect the valve flaps to the papillary muscles.
The septal cusp of the right atrioventricular valve.
It returns blood supplied to the heart by the left coronary artery.
It is a remnant of the fetal passageway for blood between the right and left atrium.
It allows for slight expansion behind each cusp of the aortic valve.
They are muscular ridges in the ventricles of the heart.
A smooth-surfaced, thick portion of heart muscle shaped like a semilunar crest at the entrance into the auricle.
By using percussion over the thorax.
Inner parietal serous pericardium, middle fibrous pericardium, and outer pericardial mediastinal pleura.
At the base of the pulmonary trunk, covered by the left auricle.
The right ventricle.
On the left side, where the apex of the heart is directed.
The space between the parietal and visceral serous pericardium that contains pericardial fluid.
The terminal branch of the left coronary artery.
The parietal cusp and the septal cusp.
Subclavian, vertebral, costocervical trunk, internal thoracic, and others.
The superficial separations of the right and left ventricles, indicating the position of the interventricular septum.
A transverse ridge of tissue between the two caval openings that diverts inflowing blood toward the right atrioventricular orifice.
It supplies blood to the left side of the heart.
