ANS: B Merkel cells possess intracellular vesicles that resemble those of synapses and furthermore contact sensory nerve endings adjacent to the stratum basale. They have been shown to react to mechanical stimulation
a. Labial glands
b. Palatine glands
c. Parotid glands
d. Sublingual gland
e. Submandibular gland
ANS: C
The parotid gland, apart from von Ebner's glands, is the only salivary gland consisting entirely of serous acini.
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The partial pressure of carbon dioxide is greatest in
A) venous blood. B) alveolar air. C) expired air. D) inspired air. E) arterial blood.
Over 90% of all parasympathetic fibers are derived from cranial nerve number ________.
A) V B) VII C) X D) XII
________ are free phagocytes found in the lungs.
Fill in the blank(s) with the appropriate word(s).
During the Cori cycle, in the liver
A) lactic acid is produced from glucose B) lactic acid is produced from pyruvic acid C) lactic acid is shuffled to muscle cells D) glucose is produced from lactic acid E) glucose is released from glycogen