Briefly describe the peripheral nervous system.
What will be an ideal response?
Students' examples may vary.
The answer should contain the following information:
The peripheral nervous system branches out from the spinal cord and brain and reaches the extremities of the body. Made up of neurons with long axons and dendrites, the peripheral nervous system encompasses all the parts of the nervous system other than the brain and spinal cord. There are two major divisions of the peripheral nervous system-the somatic division and the autonomic division-both of which connect the central nervous system with the sense organs, muscles, glands, and other organs.
The somatic division of the peripheral nervous system specializes in the control of voluntary movements, such as the motion of the eyes to read or those of the hand to scroll down a page. The somatic division also communicates information to and from the sense organs. The autonomic division of the peripheral nervous system controls the parts of the body that keep us alive-the heart, blood vessels, glands, lungs, and other organs that function involuntarily without our awareness
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a. classical conditioning. c. behavior modification. b. operant conditioning. d. instrumental conditioning.
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a) anal b) oral c) phallic d) psychosexual