Which of the choices below does not describe how recovery oxygen uptake (oxygen deficit) restores metabolic conditions?
A) converts lactic acid back into glycogen stores in the liver
B) resynthesizes creatine phosphate and ATP in muscle fibers
C) increases the level of lactic acid in the muscle
D) replaces the oxygen removed from myoglobin
C) increases the level of lactic acid in the muscle
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A pedestrian narrowly avoids being hit by an oncoming car. He notices that it takes a little while for his heart rate and respiratory rate to return to normal. This is likely because
A) the parasympathetic nervous system has become activated. B) sympathetic activation of the adrenal medulla has released epinephrine and norepinephrine into the bloodstream. C) the splanchnic nerves have become activated. D) somatic motor neurons have increased the heart and respiratory rate. E) the corticospinal pathway has become activated.
What can happen when the usual negative feedback mechanisms are overwhelmed and destructive positive feedback mechanisms take over?
What will be an ideal response?
The countercurrent multiplier mechanism of the nephron is in the
A) proximal tubule and distal tubule. B) loop of Henle and vasa recta. C) distal tubule and collecting duct. D) glomerulus and Bowman's capsule. E) glomerulus and collecting duct.
Define:
What will be an ideal response?