An individual is stricken with an illness characterized by nausea, vomiting, and diarrhea
Over a 2-day period, this individual experiences a 3-kg loss in weight without a change in the plasma [Na+]. What can be concluded about body fluid volumes and composition in this individual?
A. The volume of ICF is increased.
B. The volume of ECF is reduced.
C. The total body osmoles increased.
D. The plasma osmolality is reduced.
ANS: B
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The rabies virus travels to the CNS via
A) anterograde axoplasmic transport. B) retrograde axoplasmic transport. C) blood vessels. D) subcutaneous connective tissue. E) cerebrospinal fluid.
The environment outside the plasma membrane is most appropriately referred to as ________.
A. extracellular B. multicellular C. centrocellular D. intracellular E. None of the choices are correct.
Which of the following statements is false about the choroid plexus?
a. It is located within the ventricles of the brain. b. It is composed of ependymal cells and blood capillaries. c. It receives and filters all sensory information. d. It produces and circulates cerebrospinal fluid.
Which neuroglial cell produces myelin in the peripheral nervous system?
A) Schwann cell B) Oligodendrocyte C) Astrocyte D) Microglial cell