During middle adulthood, aerobic capacity declines as:
A) less oxygen is taken into the lungs and less blood is pumped by the heart.
B) sensitivity to insulin is lost by the muscle tissues.
C) lean-body mass, which includes fat, is replaced by muscle.
D) large amounts of calcium are lost by the bones, making them porous and brittle.
A
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In a study of heart rate changes following smoked marijuana with 4 percent THC or 20 mg oral THC
A. the heart rate increased much more after oral THC. B. the peak effects were similar, but smoking produced a faster onset of effects. C. smoked THC increased heart rate, but oral THC had no effect. D. heart rates remained elevated for up to three days after smoking marijuana.
__________ schizophrenia is characterized by delusions of persecution, grandeur, and jealousy, together with hallucinations
a) Disorganized b) Paranoid c) Residual d) Catatonic
Research suggests that everyone has a ________ for happiness, a genetically determined characteristic level of mood
A) threshold B) set point C) range D) bracket
Which of the following is NOT described in the textbook as one of the purposes for which young people use substances?
a. Experimental reasons b. Social experiences c. Medicinal purposes d. Peer acceptance