Which of these is the best imaging technique for routinely examining the anatomical development of a fetus?
A. PET scan
B. Sonography
C. MRI
D. Radiography
E. Auscultation
Answer: B
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What allows you to lift different weights with the same muscle is the:
a. difference in the threshold stimulus b. number of motor units used by the muscle c. all-or-none law d. isometric contraction of the muscle fibers
An extracorporeal liver assist device was surgically implanted into Sam. This device is very similar to
A. kidney dialysis. B. artificial skin. C. a blood transfusion. D. an artificial heart.
The first branch of the lumbar plexus is the ________ nerve.
Fill in the blank(s) with the appropriate word(s).
Which of the following does not characterize the sympathetic nervous system?
a. It promotes responses that prepare the body for strenuous physical activity. b. It has some afferent fibers. c. Most of its postganglionic fibers are adrenergic. d. Its effects may be excitatory or inhibitory. e. Its postganglionic neurons display nicotinic receptors.