Which of the following structures carried both sensory and motor neurons?
A. Posterior root ganglion
B. Posterior white column
C. Spinal nerve
D. Anterior gray horn
C. Spinal nerve
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Which correctly describes the cause of the increase in alveolar ventilation that occurs when a person ascends to high altitude?
A. The decrease in PCO2 of inspired air decreases alveolar PCO2, stimulating the central chemoreceptors. B. The decrease in total atmospheric pressure causes a greater negative pressure in the intrapleural space, resulting in deeper and more frequent breathing. C. The decrease in PCO2 of inspired air decreases alveolar PCO2, stimulating the peripheral chemoreceptors. D. The decrease in PO2 of inspired air decreases alveolar and arterial PO2, stimulating the peripheral chemoreceptors. E. The decrease in the total barometric pressure at high altitude causes hypocapnea, which stimulates peripheral chemoreceptors.
In general, the nervous system does each of the following except
A) help to maintain homeostasis. B) respond rapidly to change. C) direct long-term responses to change. D) direct very specific responses. E) interpret sensory information.
In the parasympathetic division, _________ ganglia are located close to the target organ
Fill in the blank with correct word.
Groups of neurons in the spinal cord that coordinate the simple, repetitive, alternating movements of the lower limbs that facilitate walking are called central __________ generators.
Fill in the blank(s) with the appropriate word(s).