There are three types of unencapsulated tactile receptors. Select the exception
A. Free nerve endings
B. Sebaceous filaments
C. Root hair plexuses
D. Tactile discs
B
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Which of the following is NOT a function of the small intestine?
A. Complete digestion of food B. Mastication of food C. Absorption of nutrients D. Mixing by segmental contractions
Smooth muscle can be classified as either _______ or _______, depending on its pattern of contractile activity and how its cytosolic Ca2+ increases
Fill in the blank(s) with correct word
Which of the following is true immediately after a spermatogonium completes cell division?
A) Mature spermatozoa enter the lumen. B) Fusion of diploid nuclei occurs. C) The primary spermatocyte is directed toward the lumen of the seminiferous tubule. D) Daughter cells of spermatogonia are haploid. E) Spermiogenesis begins.
Which of the following statements concerning the properties of action potentials is TRUE?
A. A supra-threshold stimulus can stimulate an action potential during the absolute refractory period. B. Action potentials generally propagate from the axon terminal toward the axon hillock. C. The rate of propagation of an action potential down an axon is independent of stimulus strength. D. Increasing the size of a stimulus will increase the amplitude of an action potential. E. Action potentials can undergo summation.