Which results from stimulation by the sympathetic nervous system?
A) release of glucose from the liver
B) decreased heart rate
C) stimulation of the digestive organs
D) constriction of the bronchi
Answer: A
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Resting potential arises from the distribution of charged ____ and small ions inside and outside of a neuron
a. pumps b. channels c. organelles d. proteins e. membranes
Dry air cools more rapidly than moist air
Indicate whether the statement is true or false
Covalently bonded atoms with similar electronic negativities are:a
ionic. b. polar. c. nonpolar. d. partially positive. e. partially negative.
When a muscle fiber receives an action potential from a neuron, how many sarcomeres in the fiber contract?
A) The number that contracts is directly proportional to the strength of the action potential. B) The number that contracts is inversely proportional to the strength of the action potential. C) Approximately one half of the sarcomeres in the fiber contract. D) All of the sarcomeres in the fiber contract.