What is the only human cell with a flagellum?

A. Sperm cell
B. Macrophage (large, mobile white blood cell)
C. Columnar cell of upper respiratory tract
D. Red blood cell
E. Columnar cell of small intestine


Answer: A

Anatomy & Physiology

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Platelets are normally attracted to a

a. collection of white blood cells. b. disrupted surface of a blood vessel. c. smooth surface. d. source of ATP production. e. surface where the blood meets the air.

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The chloride shift refers to the

A. effect of chloride ions on the oxygen dissociation curve. B. exchange of chloride ions for bicarbonate ions across the red blood cell membrane. C. exchange of chloride ions for carbon dioxide across alveolar cell membranes. D. effect of chloride ions on hydrogen ion diffusion from red blood cells. E. exchange of chloride ions for hemoglobin across the RBC membrane.

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The reticular activating system (RAS) is comprised of specific pathways primarily in the limbic system

Indicate whether the statement is true or false

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Aldosterone causes kidney tubules to

A. reabsorb more sodium, water, and potassium. B. reabsorb more sodium and water, and secrete more potassium. C. reabsorb more sodium, and secret more water and potassium. D. secrete more sodium, water, and potassium. E. secrete more sodium and reabsorb more potassium.

Anatomy & Physiology