The pyramids of the medulla contain
A. ascending motor tracts.
B. descending motor tracts.
C. ascending sensory tracts.
D. descending sensory tracts.
E. None of these choices are correct.
B
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Describe the appearance of simple columnar epithelial cells in a sectional view
A) They appear flat and look like a cracked egg with the nucleus on top. B) They appear spherical with the nucleus in the middle. C) They appear columnar with an elongated nucleus close to the basement membrane. D) They appear like a cube, as tall as they are wide, with the nucleus centered in the middle of the cell. E) They appear like rounded fluffy cells with the nucleus placed irregularly in the cell.
The paired cartilages that articulate with the superior border of the cricoid cartilage are the ________ cartilages
A) cricothyroid B) innominate C) cuneiform D) corniculate E) arytenoid
Which of the following molecules is capable of detecting light rays that strike the photopigments in the retina?
a) cGMP b) opsin portion of rhodopsin c) cis-retinal d) melanin e) retinal isomerase
Antidiuretic hormone (ADH) ________
A) promotes dehydration B) increases urine production C) secretion is inhibited by alcohol D) is produced by the anterior pituitary