A somatic motor neuron carries signals to which of the following?
A. Glands, cardiac muscle, and smooth muscle
B. The CNS
C. The viscera of the thoracic and abdominal cavities
D. Skeletal muscle fibers
E. Voluntary contraction of smooth muscle
D. Skeletal muscle fibers
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Which part of the reflex arc is associated with interneurons?
a. sensory receptor b. afferent pathway c. integrating center d. efferent pathway e. effector
Enzymes are named With an 'ase' at the end
Based on the biologist the discovered the function of the enzyme Based on the product produced Based on the job or role of the enzyme
What would be the best explanation for why myelinated fibers conduct signals faster than unmyelinated fibers?
A. There are no internodes in unmyelinated fibers. B. Facilitated diffusion of sodium and potassium is faster in myelinated fibers. C. There are more internodes in unmyelinated fibers. D. Diffusion of ions along the axoplasm is faster. E. Active transport of sodium and potassium is faster in myelinated fibers.
Which of the following is NOT a possible route for neural crest cells?
A. melanocytes B. autonomic ganglion neurons C. adrenal cortex D. sensory ganglia E. enteric nervous system neurons