What defines a cell as an afferent neuron?
A) It has the capacity to respond to environmental stimuli.
B) It is located at the periphery.
C) It has an axon that carries information to integrating centers.
D) It has receptor proteins in its membrane.
Answer: C
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Bone-building cells are called ________.
A. osteoblasts B. osteoclasts C. osteocytes D. hemopoietics
Which group of muscles forms a thick, fleshy mass at the base of the thumb?
A. Hypothenar group B. Thenar group C. Midpalmar group D. Dorsal interossei group E. Abductor digit group
The control center of a homeostatic mechanism
A. is a change in the external environment. B. brings about change to the internal environment. C. integrates sensory input and signals for change as needed. D. detects a change in a variable that is being regulated.
An isotonic solution
A. has a greater concentration of impermeant solute than a cell. B. has the same osmotic pressure as the cells in the solution. C. has more water entering than leaving a cell. D. causes a cell to shrink.