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Cn 13 Cardiovascular
Cardiovascular
Question | Answer |
---|---|
sends deoxygenated blood to the lungs | pulmonary circuit |
sends oxygen rich blood to the lungs | systemic circuit |
sac that encloses the heart | pericardium |
outer most layer of heart muscle | epicardium |
thick middle layer of muscle | myocardium |
inner most layer of heart muscle | endocardium |
upper chambers of the heart | atria |
lower chambers of the heart | ventricles |
structure that separates the right side from the left side of the heart | septum |
valve between the right atria and right ventricle | tricuspid valve |
structures that prevent the valves from inverting | chordae tendineae |
valve leaving the right ventricle | pulmonary valve |
name of the pulmonary and aortic valves | semilunar valves |
valve between the left atria and left ventricle | bicuspid |
valve leaving the right ventricle | aortic valve |
condition caused when the valves do not shut properly | murmers |
name for contraction | systole |
name for relaxation | diastole |
series of events for a complete heart beat | cardiac cycle |
mass of cells located in the right atrium that starts the heart beat | SA node |
another name for the SA node | pacemakernode pacemaker |
name of the fibers that are located in the septum between the ventricles | Bundle of His |
fibers that innervare the ventricles allowing them to contract | Purkinje fibers |
recording of the electrical signals in the heart | EKG |
type of vessels that go away from the heart | arteries |
type of vessels that lead towards the heart | veins |
type of vessel where gas exchange occurs | capillaries |
smooth muscle contraction | vasoconstriction |
smoothvasoconstriction smooth muscle relaxation | vasodilationrelaxation vasodilation |
structurevasodilation structure that veins have, but arteries do not | valvesnot valves |
stroke volume * heart rate | cardiac output |
friction between blood vessel walls and the blood | peripheral resistance |
hormones for flight or fight response | epinephrine and norepinephrine |
hormone that lowers blood pressure | ANF |
hormone that raises blood pressure | ADH |
hormone that is used for long term control of BP | aldosterone |
EKG that shows atrial systole | P wave |
EKG that shows ventricular systole | QRS complex |
EKG that shows ventricular diastole | T wave |
hormone that increases blood pressure by vasoconstriction | angiotensinvasoconstriction angiotensin |
factors that effect blood pressure | cardiac output, peripheral resistance, blood volume, blood viscosity |