The beta cells in the pancreas secrete:
a. insulin.
b. norepinephrine.
c. vasopressin.
d. prolactin.
a. insulin.
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Red blood cell production increases when
A) oxygen levels in the blood increase. B) oxygen levels in the blood decrease. C) protein levels in the blood increase. D) carbon dioxide levels in the blood decrease. E) carbon dioxide levels in the blood increase.
Cholesterol is a common precursor for polypeptide hormones
Indicate whether the statement is true or false
Which of the following is a correct order regarding the layers of the wall of small intestine (from inner to the outmost)?
a. Mucous epithelium to muscularis mucosae (smooth muscle layer of mucosa) to submucosa to muscularis (circular and longitudinal muscle layers) to Serosa b. Mucous epithelium to muscularis mucosae (smooth muscle layer of mucosa) to muscularis (circular and longitudinal muscle layers) to submucosa to Serosa c. Mucous epithelium to muscularis (circular and longitudinal muscle layers) to muscularis mucosae (smooth muscle layer of mucosa) to submucosa to Serosa d. Mucous epithelium to submucosa to Serosa to muscularis mucosae (smooth muscle layer of mucosa) to muscularis (circular and longitudinal muscle layers) e. Mucous epithelium to muscularis (circular and longitudinal muscle layers) to submucosa to muscularis mucosae (smooth muscle layer of mucosa) to Serosa
All of the following are types of passive transport except which one?
A. Simple diffusion B. Osmosis C. Endocytosis D. Filtration