When acetylcholine binds with nicotinic receptors, the response is
A. inhibitory.
B. excitatory.
C. either excitatory or inhibitory.
D. both excitatory and inhibitory.
E. neither excitatory nor inhibitory.
B
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A county fair held a water-drinking contest where people competed to see who could drink the most water in a set amount of time. During the competition, a man drank three gallons of water in under an hour and a half. Unfortunately, this killed him several hours after he won the competition. What killed the man?
A. The increase in water content stimulated his body to secrete lethal amounts of aldosterone. B. His electrolytes became incredibly diluted, causing water to rush into cells and make them burst. C. The concentration of sodium in his body tripled and caused his nervous system to stop working. D. He consumed an amount of water that his body could not use. His body responded by trying to get rid of some of the water through respiratory perspiration, and he drowned.
Descending instructions along the ________ of the spinal cord adjust peripheral muscle tone to complement the reflexive movements of the head or neck.
Fill in the blank(s) with the appropriate word(s).
The midsagittal plane divides the body into front and back halves.?
Indicate whether the statement is true or false
What is the RDA for iron?
A. 8 mg/day B. 18 mg/day C. 100 mg/day D. 25 mg/day