What action causes the second heart sound heard through a stethoscope?
A) Opening of the atrioventricular valves
B) Opening of the semilunar valves
C) Closing of the atrioventricular valves
D) Closing of the semilunar valves
Answer: D
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_______ is the term used to describe the increase in force of contradiction that occurs when a new twitch if triggered before the myofibrils can return to resting.
Fill in the blank(s) with the appropriate word(s).
When the left ventricle contracts, the diameter of the ventricular chamber
A) increases. B) decreases. C) remains the same.
In most cases, the general interpretive center and the speech center are located in the
A) left cerebellar hemisphere. B) left cerebral hemisphere. C) right cerebellar hemisphere. D) right cerebral hemisphere. E) thalamus.
Asymmetric chest wall movement is characterized by:
A) chest rise that is minimally visible. B) one side of the chest moving less than the other. C) alternating movement of the chest and abdomen. D) a part of the chest wall that bulges during exhalation