During the refractory period, a chemical "pump" moves:
A) myelin down the nodes of Ranvier.
B) sodium out of the cell.
C) potassium out of the cell.
D) negatively charged protein ions out of the cell.
B) sodium out of the cell.
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Suppose that you know a girl who has not yet begun to menstruate. She asks you what to expect about her menstrual cycle. You would tell her that
a. most women suffer from premenstrual tension. b. hormonal factors may cause premenstrual problems in some women, but cultural and psychological factors are probably more important. c. very few women experience any menstrual pain. d. the proper attitude toward menstruation can almost always eliminate the premenstrual syndrome.
Which pair of individuals would be expected to be MOST similar in body mass index?
a. a husband and wife b. an adopted child and the adoptive parent c. two fraternal twins reared together d. two identical twins reared apart
According to the research on understanding sentences,
a. negative sentences are easier to understand than affirmative sentences. b. when a sentence has several negative terms, people's understanding of the sentence is only slightly better than guessing or chance level. c. ambiguous sentences are easy to understand, unless they are in the passive voice. d. the voice of a sentence (active vs. passive) does not influence understanding.
Regarding the suppression of emotions, which of the following statements is/are TRUE?
a. Suppressing emotion can enhance thinking and memory because one remains in control. b. Restraining emotions decreases activity in the sympathetic nervous system. c. People who express their emotions generally experience better emotional and physical health. d. All of these statements are true.