Name and describe the functions of three different types of glial cells.
What will be an ideal response?
Oligodendrocytes are glial cells that produce myelin on the axons of neurons in the brain and spinal cord, while Schwann cells are glial cells that produce myelin on axons of neurons in the rest of the nervous system. Myelin serves the function of speeding conduction of signals within neurons and making neurons function more efficiently. Radial glia assist newly generated neurons in reaching the final destination in the brain. Microglia respond to injury and disease in the nervous system by removing waste, and these glial cells also provide energy for to neurons. Astrocytes support synaptic connections between neurons and release gliotransmitters, which can impact neurotransmitter functioning.
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The mark of sexual maturation for a boy that is most comparable to menarche for a girl is
a. a deepening of the voice. b. the first ejaculation of seminal fluid. c. the appearance of pubic hair. d. the release of androgens from the testes.
Which of the following is a group of several brain structures positioned in the center of the head and involved in learning, emotion, memory, and addiction?
a) limbic system b) cerebellum c) cerebral cortex d) cerebrum
In Systematic Desensitization, a client is taught a response that is incompatible with anxiety, such as relaxation. The events that cause anxiety are ranked in a hierarchy of increasing severity. The client is then asked to visualize the anxiety-provoking events, in increasing severity, while trying to relax at each step. This therapy is a direct application of:
a. classical conditioning b. Behavior Modification c. Operant Conditioning d. Air Conditioning e. Stimulus Generalization
In adolescence, the part of the brain that undergoes the most development is the
A) hypothalamus. B) prefrontal cortex. C) occipital lobe. D) motor cortex.