When smooth muscle tone and general motility decrease in older individuals, peristalsis slows, often causing ________.
What will be an ideal response?
constipation
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In an experiment, a researcher infuses a solution of conjugated bile acids into the portal vein of a rat such that their normal concentration is approximately doubled
He collects samples of hepatic bile from the rat before and after the infusion. Before the infusion, the concentrations of bile acids (BA), phosphatidylcholine (PC), and cholesterol (chol) are 30, 9, and 3 units per mL. What would be the predicted concentrations of PC and chol in the bile following the BA infusion? A. PC: 9; chol: 3 B. PC: 18; chol: 3 C. PC: 9; chol: 6 D. PC: 18; chol: 6 E. PC: 3; chol: 9
All muscle cells contain striations.
a. true b. false
An individual with androgen insensitivity syndrome is a genetic male with female internal reproductive organs
Indicate whether the statement is true or false.
It's been 5 hours since you had breakfast and now you're thinking about trying the new Mexican lunch place that just opened up across the street. The more you think about it, the hungrier you get. Your increased hunger is the result of the ________ that
your empty stomach is releasing into your bloodstream. A) cholecystokinin (CCK) B) leptin C) ghrelin D) pepsin E) insulin