The muscles that are found at openings of the body are collectively called ________.
A) convergent muscles
B) circular muscles
C) parallel muscles
D) divergent muscles
Ans: B) circular muscles
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You conduct an experiment on twenty 18-year-old male subjects to see how various intensities of exercise influence heart rate. Which of the following is/are considered an independent variable?
A) heart rate B) age of subjects C) intensity of exercise D) sex of subjects E) More than one of the answers is correct.
After eating, _________ signals the hypothalamus to suppress appetite
A) neuropeptide Y B) leptin C) pepsin D) ghrelin
Plasma is ________ while formed elements are ________.
A. mostly protein; the matrix B. the liquid portion of blood; the cells C. a blood gas; blood clots D. lacking in protein; regulators of blood osmolality E. the cellular portion of blood; acellular components
Compared to the normal plasma osmolarity, the tubular fluid is ________ as it enters Bowman's space, ________ at the beginning of the loop of Henle, ________ at the tip of the loop, and ________ at the beginning of the distal convoluted tubule
A. isosmotic; hyperosmotic; hyperosmotic; isosmotic B. isosmotic; isosmotic; hypoosmotic; hypoosmotic C. isosmotic; isosmotic; hyperosmotic; hypoosmotic D. isosmotic; isosmotic; hypoosmotic; hyperosmotic E. isosmotic; isosmotic; hyperosmotic; isosmotic