Anatomy test-Heart

laurabockoff's version from 2017-03-23 00:27

Section 1

Question Answer
cardiovascular system pumping action of the heart that permits blood to circulate and transport nutrients to the rest of the body and carry wastes away. Contains blood and blood vessels
Apexdirect down towards left hip; rests on diaphragm
Basepoints up towards the right shoulder
Epicardiumhugs the external surface of the heart and contains parietal pericardium
parietal pericardiumproduces serous fluid
serous fluidfluid lubricating the heart which creates a relatively frictionless environmnent
atriathe smaller, superior chambers of the heart that receive blood from veins
ventriclesthe inferior, larger chambers that are responsible for pumping blood out of the heart

Section 2

Question Answer
interventricular septumseparates left and right ventricles
interatrial septum separates the left and right atria
pulmonary circulationbrings blood to the lung for gas exchange
systemic circulationallows blood to transport nutrients to different parts of body and carry wastes away
chordae tendineaeligaments that anchor valves to ventricular walls and pulls up on valves to close them
coronary arteriesnourishes myocardium
coronary sinuseswide channel that receives blood from the coronary veins and empties into the right atrium of the heart.
angina pectoriscondition in which there is an inadequate blood supply to the heart; results in severe chest pain

Section 3

Question Answer
MIan are of heart tissue in which the cardiac cells have died
SA nodemakes the heart beat as a coordinated unit; natural pacemaker that sets the heart rate
systolewhen the ventricles contract for the atria to be relaxed and filling with blood. SL open, AV closed
diastoleventricles relax and blood fills ventricles. SL close, AV open
CHFweakening of heart muscle
P wavesignals the depolarization of the atria immediately before they contract
T waveresults from the currents flowing during repolarization of the ventricle
QRS complexresults from the depolarization of ventricles. Precedes the contraction of the ventricles

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