Muscle strength peaks in a/an ________.
A. elderly adult
B. middle aged adult
C. adolescent
D. young adult
E. child
Answer: D
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The time period of the embryo is two weeks gestation to ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is not an accessory organ of the male reproductive system?
A. gonads B. prostate gland C. scrotum D. seminal vesicle
Sometimes, when it is difficult to initiate a knee-jerk reflex by tapping the patellar tendon, a patient will be asked to voluntarily make a fist. Then the reflex will be easily evoked. What does this illustrate about the relation between voluntary and
involuntary reflex movement? What will be an ideal response?
Movements of the body are usually smooth and occur at differing rates because
A. of the all-or-none principle. B. most muscle contractions closely resemble individual muscle twitches. C. they are a mixture of isotonic and isometric contractions. D. motor units contract out of phase at their own particular rates. E. muscles of different sizes contract at different rates.