cardiovascular system Flashcards
directed toward the left hip and rests on the diaphragm approximately at the level of the fifth intercostal space
apex
broader posterosuperior aspect
base
encloses the heart by a double sac of serous membrane
pericardium
two of the four hallow chambers or cavaties
Atria
two of the four hallow chambers or cavaties
Ventricles
septum that divides the heart longitudinally
Interatrial septum
receives relatively oxygen poor blood from the viens of the body
Superior venae cavae
receives relatively oxygen poor blood from the viens of the body
Inferior venae cavae
carries blood to the lungs where oxygen is picked up by carbon dioxide is unloaded
Pulmonary arteries
oxygen rich blood drains from the lungs and back to the left side of the heart is
Pulmonary veins
blood returned to the left side of the heart is pumped out of the heart into
Aorta
located between the atrial and ventricular chambers on each side
Atrioventricular valves
two flaps or cusps of endocardium
Bicuspid valves
has three flaps
Tricuspid valves
anchor the flaps to the walls of the ventricles
Chordae tendineae
guards the bases of the two large arteries leaving the ventricular chambers
Semilunar valves
branch from the base of the aorta and encircle the heart in the coronary sulcus at the junction of the atria and ventricles
Coronary arteries
empty into a enlarged vessel on the backside
Cardiac veins
backside of the heart called
Coronary sinus
located in the right atrium
Sinoatrial node
spread within the muscle of the ventricle walls
Purkinje fibers
SA node is often called this
Pacemaker
heart contraction and relaxation respectively
Systole
heart contraction and relaxation respectively
Diastole
