The difference between a three- and a two-neuron reflex is that a three-neuron reflex:
a. passes through the dorsal root ganglion
b. includes an efferent neuron
c. includes an interneuron
d. includes an afferent neuron
c. includes an interneuron
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Calcitonin is produced by the C cells of the parathyroid gland
Indicate whether the statement is true or false
Na+ and K+ both use ________ to passively diffuse across the plasma membrane
A) facilitated diffusion B) exocytosis C) voltage-gated channels D) leak channels E) carrier-mediated transport
Pericytes are contractile cells found in which location?
a. Adherent to smooth muscle cells in the tunica media of arterioles b. Adjacent to the surfaces of capillaries c. Exclusively in elastic arteries d. Within the tunica intima of veins e. Within valves of lymphatic vessels
Rapidly adapting proprioceptors that provide positional information during movement are called ______ receptors
A. phasic B. tonic