The exocrine portion of the pancreas is composed of
A) islets of Langerhans.
B) pancreatic crypts.
C) pancreatic acini.
D) pancreatic lobules.
E) triads.
C
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If there is a stroke in the motor portion of the left side of the brain, it affects muscles of the right side of the body. Why?
A. The fibers of the corticospinal tracts are ipsilateral. B. The fibers of the corticospinal tracts are contralateral. C. The fibers of the corticospinal tracts are unilateral. D. The fibers in the motor tracts do not decussate. E. The fibers of the tectospinal tracts are contralateral.
When does the heart begin to beat?
A. By week 3 in the embryo B. By week 5 in the embryo C. Early in fetal development D. By the fifth month of development E. At birth
If the CNS was susceptible to a drug that should not affect it, this might indicate damage to which of the following cells?
A) microglia B) Schwann cells C) satellite cells D) ependymal cells E) astrocytes
Taste
a. discrimination depends on the ratio of stimulation of the taste buds, which have a variation in relative sensitivity. b. buds are stimulated only by chemicals in solution. c. discrimination does not go beyond distinguishing between the five primary tastes. d. both (a) and (b) above. e. all of these answers.