Which of the following is a true statement about what occurs when an axon transmits an action potential?
A. Electricity flows from one end of the axon to the other.
B. Nothing physically moves down the axon.
C. Neurochemicals flow from one end of the axon to the other.
D. The sodium-potassium pump pushes ions down the axon.
Answer: B
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Around age 50, most women can expect the cessation of menstruation and ovulation, an event known as
a. osteoporosis. b. the midlife crisis. c. impotence. d. menopause.
The rhythmic movement of air molecules produces
a. electromagnetic waves. b. sound waves. c. kinesthetic sensation. d. gustation.
A distribution has a mean of 78 and a median of 92. This distribution is _________.
Fill in the blank(s) with the appropriate word(s)
Four- to 7-year-olds regard friendship as ________.
A. an understanding of thoughts and feelings B. pleasurable play and sharing of toys C. based on mutual trust D. long-term and enduring