Preganiglionic sympathetic neurons exit the central nervous system from the:
a. brain
b. thoracic region
c. sacral region
d. both a and c
Answer: b. thoracic region
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Which is TRUE regarding the structure and synthesis of hormones?
A. Thyroid hormones are catecholamines. B. Vasopressin is synthesized in the posterior pituitary. C. The hormones of the adrenal cortex have the same structure as the neurotransmitters of adrenergic neurons. D. Steroid hormones are synthesized from cholesterol. E. Most peptide hormones require binding proteins for transport in the blood.
Neurotransmitters are stored in vesicles in
A) myofibrils. B) motor units. C) motor neuron endings. D) motor end plates.
The spinal nerves
A) contain sensory axons. B) contain motor axons. C) are formed from the convergence of dorsal and ventral roots. D) exit the vertebral column via intervertebral foramina. E) all of the above
Name the layer labeled C
a) Submucosa b) Serosa c) Longitudinal muscle d) Mucosa e) Circular muscle