National statistics suggest that about ____ million Americans suffer from osteoporosis or are at high risk due to low bone density
a. 20
b. 40
c. 60
d. 80
b
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The neurons in Michael's arm just sent a neural impulse. It will be 1–2 milliseconds before another neural impulse can be generated. This brief time period, when another neural impulse cannot occur, is called the
a. all-or-none period. b. absolute refractory period. c. resting potential. d. postsynaptic discharge.
Gross motor skills are to ____, whereas fine motor skills are to ____
a. large muscle groups? small muscle groups b. small muscle groups? large muscle groups c. nervous system development? instruction from peers d. development during early childhood? development during adolescence
One hundred lottery tickets have been sold. You've purchased 30 tickets. What is the probability of one of your tickets being randomly selected?
a. 0.03 c. 0.30 b. 0.01 d. 0.60
Which part of the brain houses the human clock?
A. Hypothalamus B. Hippocampus C. Corpus callosum D. Medulla oblongata