Myelinated axons have large numbers of ion channels
A. along the entire length.
B. at the axon hillock and nodes of Ranvier.
C. only at the axon terminals.
D. only at the axon hillock.
Answer: B
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The patterns of acquisition of conditioning in Stages 1 and 2 of Exercise 13 (higher-order conditioning), as reflected in the movement ratio results, differed most in terms of
a. starting at different values (the movement ratio in Stage 1 started higher than that in Stage 2). b. ending at different values (the movement ratio in Stage 2 ended lower than that in Stage 1). c. their shapes (the movement ratio in Stage 1 rose slowly, that in Stage 2 very quickly). d. one being excitatory (Stage 1) and the other inhibitory (Stage 2).
The source of mortality statistics is
birth certificates. death certificates. physician notification. family report.
Compared to older mothers, teen mothers have a lower rate of pregnancy complications
Indicate whether this statement is true or false.
Leslie is trying to learn how to spell the word Mississippi. She repeats the letters to herself over and over again “M-I-S-S-I-S-S-I-P-P-I.” Leslie is using the memory strategy known as ___.
a. rehearsal b. searching c. organizing d. mnemonics