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Question 1: The pulse wave is created by: A. the electrical singals of the heart B. The...

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Medical Sciences

Question 1: The pulse wave is created by:

A. the electrical singals of the heart
B. The contraction of the arteries
C. The contraction of the left ventricle
D. The contraction of the bronchioles



Question 2: If the arteries are vasodilated, then the pulseamplitude will be:
a. faster
b. slower
c. higher
d. lower

question 3. venous return of the heart occurs due to pressurecreated by:
a.respiratory pump only
b. skeletal muscle pump only
c. contraction of the heart
d. skeletal muscle pump and respiratory pump

question 4. A decrease in blood pressure will cause:
a. an increase in the parasympathetic system
b. vascoconstriction
c. vasodilation
d. decreased heart rate

Answer & Explanation Solved by verified expert
4.4 Ratings (687 Votes)
Question 1 The pulse wave is created by Answer C the contraction of the left ventricle Explanation Pulse wave is created by sudden increase in the blood pressure due to contraction of the left ventricle which pumps the blood into the systemic circulation ie the aorta and other systemic arteries This wave is propagated along the entire arterial system hence a pulse can be measured at different arterial sites in the body Pulse is used to measure the heart rate and other features of cardiovascular system It is between the range of 60100 per minute which is equal to the normal heart rate Pulse can be palpated over those systemic arteries which are easily accessible and superficial and close to a body surface Most commonly used artery to measure the pulse is radial artery at the wrist Other arteries which can be used to measure the pulse are carotid artery at neck popliteal artery at    See Answer
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