Select the best choice to match the description. “Instant” requires one letter “Intervals” require two-letter answers Hint: this is easier if you sketch the diagram and draw in all the other events you know before answering. 1: Instant at which first heart sound BEGINS 2: Instant when atrioventricular valves open 3: Instant at which ventricular pressure first exceeds aortic pressure 4: Instant when atrial pressure first exceeds ventricular pressure 5: Interval of passive ventricular filling 6: Interval of atrial kick for ventricular filling 7: Interval when stroke volume is ejected 8: Interval of isovolumic contraction 9: Interval that best shows end systolic volume 10: Interval that best shows end diastolic volume 11: Interval of isovolumic relaxation 12: Interval during which the pouring/sloshing of heart sound 3 is heard匹配题
A
c
B
ea
C
cd
D
ab
E
b
F
d
G
a
H
bc
I
de
J
e
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Question textRefer to the labelled heart diagram below. For each statement, select the option that best completes both parts of the blood flow or cardiac cycle relationship. After blood enters the right atrium, it next passes through the Answer 1 Question 6[select: , aorta, semilunar valves, left atrioventricular (mitral) valve, left atrium, right atrioventricular (tricuspid) valve] and then enters the Answer 2 Question 6[select: , pulmonary arteries, right atrium, left ventricle, aorta, right ventricle]. During ventricular systole, the Answer 3 Question 6[select: , atrioventricular (mitral) valve, atrioventricular (tricuspid) valve, semilunar valves, pulmonary veins, vena cava] are open, allowing blood to enter the Answer 4 Question 6[select: , atria, coronary circulation, vena cava, aorta and pulmonary arteries, pulmonary veins]. The chamber generating the highest pressure is the Answer 5 Question 6[select: , left atrium, left ventricle, right atrium, right ventricle, septum], which pumps blood into the Answer 6 Question 6[select: , aorta, left atrium, coronary sinus, pulmonary trunk, superior vena cava]. The main function of the heart valves is to Answer 7 Question 6[select: , maintain one-way blood flow, initiate the heartbeat, regulate blood pressure directly, oxygenate blood, control red blood cell production], which prevents Answer 8 Question 6[select: , hemopoiesis, vasodilation, platelet activation, gas exchange, backflow].
When the heart atrias are contracting the ventricles are relaxed.
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