The mechanism of action of lipid-soluble hormones is generally via the stimulation or inhibition of specific DNA-dependent protein synthesis
Indicate whether the statement is true or false.
TRUE
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Regurgitation of food from the stomach into the esophagusA) is ordinarily inhibited by the upper esophageal sphincter.B) causes irritation of the esophageal mucosa.C) is called retropulsion, and is essential for gastric digestion.D) is ordinarily prevented by the lower esophageal sphincter.E) is called secondary peristalsis.
What will be an ideal response?
Strength training causes ________
A) A decrease in the number of mitochondria in a muscle cell B) Muscle hypertrophy C) A decrease in blood vessels to a muscle D) Muscle atrophy
Urea is
A. completely reabsorbed by the nephron. B. diffuse out of the collecting ducts into the interstitial fluid of the medulla and then diffuse into the descending loop of Henle. C. secreted into the filtrate by cells of the distal convoluted tubule. D. actively transported into the filtrate by cells of the collecting duct. E. None of the choices are correct.
During an action potential, when a nerve cell membrane changes from positive inside to negative inside, the cell membrane is undergoing
A) depolarization. B) repolarization. C) tetany. D) treppe.