A ________, also called a mole, is a harmless, localized overgrowth of melanin-forming cells.
Fill in the blank(s) with the appropriate word(s).
nevus
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Bicarbonate secretion
A) is secreted by apical Cl--HCO3- antiport. B) neutralizes acid entering from the stomach into the duodenum. C) is not dependent on high levels of carbonic anhydrase to maintain bicarbonate production. D) neutralizes acid entering from the stomach into the duodenum and is secreted by apical Cl--HCO3 - antiport. E) is secreted by the acinar cells.
Which of the following is an incorrect statement regarding the occurrence of a sensation?
A) A generator potential in the associated sensory neuron must reach threshold. B) The stimulus energy must be converted into the energy of a graded potential called a transduction potential. C) The stimulus energy must match the specificity of the receptor. D) The stimulus energy must occur within the receptor's receptive field.
The gastric phase of gastric secretion is triggered by
A) the release of cholecystokinin and secretin by the small intestine. B) the sight, thought, or smell of food. C) the entry of chyme into the small intestine. D) the entry of food into the stomach. E) the entry of chyme into the large intestine.
When one motor neuron fires a single action potential the result affects one
A) synaptic cleft. B) motor unit. C) upper motor neuron. D) lower motor neuron. E) sensory unit.