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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 |