Neurotransmitters are composed of a variety of different chemicals, including
A) Amino acids.
B) Neuropeptides.
C) Biogenic amines.
D) All of the above
Answer: D
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Receptors for the general senses are found
A. widely distributed throughout the body. B. in a few clusters. C. throughout the visceral organs. D. only in the integumentary system.
In your study of a drug's efficacy in treating hypertension, your subjects are white males, ages 40 to 60 years. Is your study applicable to all people? Explain.
What will be an ideal response?
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.
Proprioception and pressure impulses are carried by large, ________ neurons in the ________ columns of the spinal cord and are ________.
A. unmyelinated; dorsal; contralateral B. myelinated; ventral; contralateral C. myelinated; dorsal; ipsilateral D. unmyelinated; lateral; ipsilateral