Epicardium
visceral layer of the pericardium - protection
Parietal Pericardium
the tough outermost layer of the pericardium that is attached to the diaphragm and the sternum - protection
Anterior Interventricular Sulcus
a shallow groove on the anterior surface of the heart that marks the external boundary between the right and left ventricles
Right Atrium
The upper right chamber of the heart, where deoxygenated blood is received from the vena cava and then sent to the right ventricle.
Right Ventricle
the chamber on the right side of the heart that receives venous blood from the right atrium and pumps it into the pulmonary trunk
Left Atrium
the left upper chamber of the heart that receives blood from the pulmonary veins and passes it to the left ventricle
Left Ventricle
the chamber on the left side of the heart that receives arterial blood from the left atrium and pumps it into the aorta
Coronary blood vessels
arteries and vein that carry the heart's blood supply
Pulmonary Trunk
the artery that carries venous blood from the right ventricle of the heart and divides into the right and left pulmonary arteries
Pulmonary Arteries (R & L)
receives blood from the pulmonary trunk and sends it to the lungs to be oxygenated
Aorta
receives blood from the left ventricle and passes it to the rest of the body via a series of arteries
First major artery **
Brachiocephalic artery
**
Brachiocephalic Artery
The first major branch off of the aorta and the major artery to the forelimbs and head.
Posterior Interventricular Sulcus
depression on the posterior surface of the heart - marks the division of the left and right ventricles
Coronary Sinus
a short sinus receiving most of the veins of the heart; empties into the right atrium
Superior Vena Cava
receives blood from the head and arms and chest and empties into the right atrium of the heart
Inferior Vena Cava
receives blood from lower limbs and abdominal organs and empties into the posterior part of the right atrium of the heart
Endocardium
the membrane that lines the cavities of the heart and forms part of the heart valves
Tricuspid Valve
passes blood from right atrium to right ventricle
Chordae Tendinae
fibers attached to the bicuspid and tricuspid valves which pull them closed when papillary muscles contract, preventing backflow of blood
Papillary Muscles
responsible for pulling the AV valves closed by means of the chordae tendineae
Moderator Band
prevents over-distention of the right ventricular wall
Pulminary Semilunar Valve
heart valve opening from the right ventricle to the pulmonary artery
Bicuspid Valve
a.k.a. mitral valve; passes blood from the left atrium to the left ventricle
Aortic Semilunar Valve
heart valve receiving blood from the left ventricle and passing it to the aorta
Pulmonary Veins
deliver oxygen rich blood from the lungs to the left atrium