Please answer the multiple choice -- please explain too! 1. As ventricular pressure increases during systole,...

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Medical Sciences

Please answer the multiple choice -- please explain too!

1. As ventricular pressure increases during systole, the volumeof blood in the ventricle....

a. increases

b. decreases

2. Which of these is FALSE about the ejection of blood from theleft ventricle?

a. the pulmonary semilunar valve is open

b. the bicuspid valve is closed

c. the aortic semilunar valve is closed

d. the tricuspid valve is closed

3. During action potentials in the heart,

a. voltage-gated K+ channels slowly repolarize; voltage-gatedNa+ channels slowly depolarize; voltage-gated calcium channelsquickly depolarize; voltage gated K+ channels slowly repolarize

b. voltage-gated K+ channels quickly repolarize; voltage-gatedNa+ channels quickly depolarize; voltage-gated calcium channelsquickly depolarize; voltage gated K+ channels quicklyrepolarize

c. voltage-gated K+ channels quickly repolarize; voltage-gatedNa+ channels slowly depolarize; voltage-gated calcium channelsslowly depolarize; voltage gated K+ channels quickly repolarize

d. voltage-gated K+ channels quickly repolarize; voltage-gatedNa+ channels quickly depolarize; voltage-gated calcium channelsslowly depolarize; voltage gated K+ channels quickly repolarize

Answer & Explanation Solved by verified expert
3.8 Ratings (565 Votes)
1 Option B stands correct As ventricular pressure increases during systole the volume of blood in the ventricle decreases because due to ventricular systole the blood from ventricle enter into Pulmonary artery aorta through semilunar    See Answer
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