The cells that produce myelin in the parts of the nervous system outside of the brain and spinal cord are called ______.
A. Ranvier cells
B. astrocytes
C. oligodendrocytes
D. Schwann cells
Answer: D
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Over time, ________ typically decreases in relationships
a. passion b. intimacy c. commitment d. trust
Research on biological influences on gender typing reveals that
A) sex differences in play and personality traits only appear in Western cultures. B) aggression and preference for same-sex playmates are widespread among mammalian species. C) preschool girls prefer to play in larger-group play with other girls. D) prenatally administered androgens decrease active play.
Aaron is five years old. What does the U.S. Department of Health and Human Services consider the greatest threat to his health?
a) Accidents b) Neglect c) Obesity d) Lead poisoning
A(n) _____ schedule is a schedule in which reinforcement is contingent upon meeting the requirements of two or more simple schedules
A) ?concurrent B) ?conjunctive C) ?adjusting D) ?multiple