What are the stem cells of the olfactory epithelium called?
A) basal cells
B) receptor cells
C) bipolar cells
D) supporting cells
A
Explanation:
B) The receptor cells are not the stem cells of the olfactory epithelium.
C) The bipolar cells are the receptor cells.
D) The supporting cells provide physical support and nourishment to the receptor cells.
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During the isovolumetric phase of ventricular systole:
a. the ventricles are contracting isometrically. b. the atrioventricular valves and semilunar valves are closed. c. blood is ejected into the great vessels. d. the ventricles are relaxing. e. both (a) and (b) above.
The glossopharyngeal nerve
A. innervates the larynx. B. is involved in the sense of taste. C. innervates intrinsic tongue muscles. D. transmits sensory information from the abdominal viscera. E. controls facial expressions.
Which are characteristics of type O blood?
a: Has anti-A antibodies b: Has anti-B antibodies c: Has surface antigen O on its erythrocytes d: Has surface antigen A on its erythrocytes e: Has neither surface antigen A nor B on its erythrocytes A. a, b, c B. a, b, e C. b, c, e D. b, c, d E. c
The two major types of phagocytic cells are ________ and ________.
A. lymphocytes; monocytes B. neutrophils; monocytes C. eosinophils; T cells D. neutrophils; macrophages E. monocytes; macrophages