Endorphins and enkephalins
a. are endogenous morphine-like substances
b. are important in the body's natural analgesic system
c. stimulate the release of substance P by binding with opiate receptors
d. exhibit both a and b characteristics
e. exhibit both a and c characteristics
D
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The folds of the surface of the cerebellum
A) are called folia and are less prominent than the cerebral folds. B) form a network of blood vessels over the brain. C) consist of axons and dendrites of neurons. D) are bathed in spinal fluid. E) are called sulci.
During excitation-contraction coupling,
a. the action potential travels down the T tubules b. Ca2+ is released from the sarcoplasmic reticulum c. Ca2+ is taken up by the sarcoplasmic reticulum d. both a and b occur e. both a and c occur
Name and briefly define the four routes by which heat is transferred between an animal and its environment
What will be an ideal response?