Our perception of the pull of gravity and linear acceleration is the result of
A) the pressure exerted by the otolithic organ on hair cells of the maculae.
B) changes in the pressure exerted by the cupula on hair cells.
C) vibrations of the tectorial membrane striking hair cells.
D) the movement of the otolithic organ within the ampullae of the semicircular canals.
A) the pressure exerted by the otolithic organ on hair cells of the maculae.
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Which of the following is a long drawn and deep inhalation followed by a complete closure of the rima glottidis, which results in a strong exhalation, pushing the rima glottidis open and sending a blast of air through the upper respiratory passages?
a) crying b) sneezing c) coughing d) sighing e) Valsalva maneuver
During the cephalic phase of gastric secretion,
a. thinking about, seeing, and smelling food reflexively increases gastric secretion b. vagal stimulation of the gastric glands occurs c. gastrin is released d. chewing food reflexively increases gastric secretion e. all of the above are true
As fluid flows down the water-permeable descending limb of the nephron loop, the osmolarity of the tubular fluid is ___________________.
a) increasing b) decreasing
Peptide hormones are comprised of chains of what?
a) nucleic acids b) amino acids c) fatty acids d) carbohydrates