Molecules that can act reversibly as acids or bases depending upon the pH of their environment are called ________.
Fill in the blank(s) with the appropriate word(s).
amphoteric
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To help discriminate the location of a touch stimulus, neurons at the center of the receptive field can inhibit those at the edge, a process known as __________
Fill in the blank with the correct word.
The infundibulum is a ___________.
A. mass of endocrine and neural cells B. portal system between the hypothalamus and the pituitary gland C. bulky nucleus composed of the paraventricular nucleus and the supraoptic nucleus D. depression of the sphenoid bone that protects the pituitary gland E. projection of the hypothalamus from which the pituitary gland hangs
Where is the swallowing center located?
A. The mouth B. The esophagus C. The brainstem D. The oropharynx E. The enteric nervous system
The sympathetic fibers in the nerves to the jejunum and ileum originate in which of the following spinal cord segments?
(A) C5-T1 (B) T1-T5 (C) T5-T9 (D) T9-T12 (E) L1-L2