Loss of balance and equilibrium can indicate damage to the:
A) trochlear nerve (IV). B) vestibulocochlear nerve (VIII).
C) accessory nerve (XI). D) hypoglossal nerve (XII).
Answer: B
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The countercurrent multiplier is a system by which the
A. vasa recta secretes multiple amounts of metabolic wastes against their concentration gradient. B. nephron loop multiplies the concentration of salts in the interstitial fluid of the kidney medulla. C. vasa recta becomes more concentrated with nitrogenous wastes than the urine. D. nephron loop dilutes the concentration of solutes in the tubular fluid at its hairpin turn.
Which type of muscle contains fusiform cells that function to propel materials through hollow organs?
A. Striated B. Skeletal C. Voluntary D. Smooth
According to its definition, muscle fatigue is ________
A) the physiological inability of a muscle to contract B) a muscle that begins to "burn" as you exercise C) an irreversible condition brought about by strong stimulus to a muscle D) a tired muscle
Which of these descriptions best matches the term "myenteric plexus"?
A) component of mucosa B) sensory neural network C) secretes a watery fluid D) coordinates activity of the muscular layer E) loose connective tissue layer containing blood vessels