Cardiovascular system Flashcards
The largest artery. It receives blood from the left ventricle and branches to all parts of the body (root aort/o).
Aorta
The semilunar valve at the entrance to the aorta
Aortic valve
The point of a cone-shaped structure (adjective, apical). The apex of the heart is formed by the left ventricle. It is inferior and pointed to- ward the left
Apex
A vessel that carries blood away from the heart. All except the pulmonary and umbilical arteries carry oxygenated blood
Artery
The small artery
Arteriole
A small mass in the lower septum of the right atrium that passes im-
pulses from the sinoatrial (SA) node toward the ventricles
Atrioventricular node
A band of fibers that transmits impulses from the atrioventricular (AV) node to the top of the interventricular septum. It divides into the right and left bundle branches, which descend along the two sides of the septum; the bundle of His.
AV bundle
An entrance chamber, one of the two upper receiving chambers of the heart
Atrium
The valve between the left atrium and the left ventricle; the mitral valve
Biscuspid valve
The force exerted by blood against the wall of a vessel
Blood pressure
Branches of the AV bundle that divide to the right and left sides of the interventricular septum
Bundle branches
A microscopic blood vessel through which materials are EXCHANGED between the blood and the tissues
Capillary
The part of the circulatory system that consists of the heart and the blood vessels
Cardiovascular system
The relaxation phase of the heartbeat cycle
Diastole
The thin membrane that lines the chambers of the heart and covers the valves
Endocardium
The thin outermost layer of the heart wall
Epicardium