The __________ root carries sensory nerve fibers to the spinal cord.
Fill in the blank(s) with the appropriate word(s).
dorsal or posterior
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____________________ muscle tissue composes the heart
Fill in the blank(s) with correct word
Which of the following are common means by which binding of an extracellular chemical messenger with a cell's receptor brings about a desired intracellular response?
a. opening or closing of specific channels to regulate ionic movement across the plasma membrane. b. activation of an intracellular second messenger system. c. alteration of protein shape and function as a result of phosphorylation. d. only (a) and (b) above. e. all of these answers.
The balance of a solute depends solely on its intake to and output from the body.
a. true b. false
Hyperventilation (a rapid rate of respiration) will cause:
a. a decrease in carbon dioxide in the blood b. a decrease of pH in the blood c. an increase of pH in the blood d. both a decrease in carbon dioxide in the blood and a decrease of pH in the blood e. both a decrease in carbon dioxide in the blood and an increase of pH in the blood