The autonomic nervous system carries what kind of messages?
A. Sensory
B. Efferent
C. Voluntary
D. Afferent
Answer: B
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The glial cell with perivascular feet that wrap around capillaries in the CNS is the
A. astrocyte. B. ependymal cell. C. neurolemmocyte. D. microglial cell. E. oligodendrocyte.
Complement facilitates inflammation by activating basophils and mast cells and by attracting macrophages and neutrophils
Indicate whether this statement is true or false.
Acetylcholine slows the heart rate by
A) increasing the permeability to K+ and decreasing the permeability to Ca2+. B) just increasing the permeability to K+. C) just increasing ion influx, thus increasing the rate of depolarization. D) just decreasing the permeability to Ca2+. E) just increasing the permeability to Ca2+.
Powerful peristaltic contractions that occur a few times each day in the colon are called
A) segmentation. B) pendular movements. C) haustral churning. D) defecation. E) mass movements.