Which is a physiological description rather than an anatomical one?
A. The walls of blood capillaries are composed of a thin epithelium.
B. There are fenestrations (openings) between the epithelial cells in capillary walls.
C. The muscles of the thigh are composed of skeletal muscle tissue.
D. The esophageal wall includes a middle layer of dense irregular connective tissue.
E. The muscles of the intestinal wall contract slowly and involuntarily.
Answer: E
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Implantation usually begins at about the end of the first ________ of development
A. day B. week C. month D. trimester
During excitation-contraction coupling,
a. the action potential travels down the transverse tubules. b. Ca2+ is released from the sarcoplasmic reticulum. c. Ca2+ is taken up by the sarcoplasmic reticulum. d. both (a) and (b) above are correct. e. all of these answers.
Treatment of a hormone's target cell with a phosphodiesterase inhibitor will result in ________.
A. immediate cessation of cell response to the hormone B. prolonged activity of the cell C. inability of the hormone to bind to its receptor D. irreversible binding of the hormone to its receptor
In which areas do adult males tend to primarily accumulate subcutaneous fat? a: Neckb: Upper armsc: Abdomend: Lower backe: Buttocks
A. One of the choices is correct. B. Two of the choices are correct. C. Three of the choices are correct. D. Four of the choices are correct. E. All of the choices are correct.