The MOST common cause of Addisonian crisis is:
A) overwhelming stress.
B) a severe acute infectious process.
C) abrupt termination of corticosteroid use.
D) acute failure of one or both of the adrenal glands.
Answer: C) abrupt termination of corticosteroid use.
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What is the primary method by which materials such as O2, CO2 and nutrients are exchanged between the blood and surrounding tissues?
a. passive diffusion of substances across the capillary wall down their concentration gradients. b. active transport of materials across the capillary wall. c. osmotic pressure drawing water and solutes out of the capillary, bringing these dissolved nutrients into contact with the tissue cells. d. processes of ultrafiltration and reabsorption. e. bulk flow.
Match the phrase to either the sympathetic or parasympathetic division of the autonomic nervous system.Increases activity of GI tract
A. Parasympathetic B. Sympathetic
The muscle that medially rotates and flexes (unlocks) the knee joint is the
A) iliacus. B) gracilis. C) sartorius. D) soleus. E) popliteus.
Epithelial membranes are typically composed of
A. epithelium and underlying connective tissue. B. connective tissue and underlying epithelium. C. connective tissue and underlying muscle tissue. D. epithelium and underlying muscle tissue.