Which of the following is a characteristic of isometric muscle contractions?
a. they occur at constant tension.
b. the muscle shortens.
c. they are used for body movements.
d. they occur at constant length.
e. the external muscle tension is greater than the load.
D
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A) fat B) glucose C) acetyl CoA D) cellulose
After crossing the axilla, the axillary artery becomes the
A) radial artery. B) ulnar artery. C) brachial artery. D) subclavian artery. E) digital artery.
At the peak of an action potential,
a. the electrical gradient for K+ tends to move this ion outward. b. the concentration gradient for K+ tends to move this ion outward. c. K+ permeability greatly increases. d. two of these answers. e. all of these answers.
The serous membrane in contact with the lung is the:
parietal pleura visceral pleura pulmonary mesentery pulmonary mediastinum none of the choices are correct