1-1, 1-2 true or false? 1-3 systolic or diastolic? 1-4 true or false? 1-1. Which

Question

1-1, 1-2 true or false? 1-3 systolic or diastolic? 1-4 true or false? 1-1. Which organ in the body always receives the most blood flow? Whenever skeletal muscle blood flow increases, blood flow to other organs must decrease. True or false? 1-2. en a heart valve does not close properly, a sound called a "murmur" can often be detected as the valve leaks. Would you expect a leaky aortic valve to cause systolic or diastolic murmur? 1-3. Wh Slowing of action potential conduction through the AV node will slow the hear rate. True or false? Suppose the diameters of the vessels within an organ increase by 10%. Other fac tors equal, how would this affect the: a. resistance to blood flow through the organ? b. blood flow through the organ? 1-5

Explanation / Answer

1-1 Which organ in the bodyalways receive the most blood flow?

Ans. Lungs

1-2 Whenever skeletal muscle blood flow increases, blood flow to other organs must decrease. true or false

Ans. True

1-3 When a heart valve does not close properly, a sound called a murmur can often be detected as the valve leaks. Would you expect a leaky aortic valve to cause a systolic or diastolic murmur?

Ans. Diastolic

1-4 Slowing of action potential conduction through the AV node will slow the heart rate. True or false?

Ans. True

1-5 Suppose the diameters of the vessels within an organ increase by 100%. Other factors equal, how would this affect the:

Ans. a. Resistance to blood flow through the organ decreases when diameter increases

b. The blood flow through the organ increases as diameter increases.

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