The primary purpose of the myelin sheath is to ________
a. insulate the neuron so it can transmit information more efficiently
b. receive messages from outside the neuron and carry them to the cell nucleus
c. provide a place for neural respiration and cell metabolism to occur
d. provide a soft covering to hold axons in place
Answer: a
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The Middle Ages had continued scientific progress in the Middle East while post-Roman empire Europe
a. discovered many natural drug substances. b. returned to supernatural theories. c. was polarized between humane treatment and torture. d. reverted to Neanderthal morphology.
In a study, people played tug-of-war while blindfolded and were told they were pulling in a group on some trials and that they were pulling alone on other trials. When the people thought they were pulling in a group, they
a. pulled harder. b. made less of an effort to pull. c. did not vary the amount of effort they exerted on any of the trials. d. were erratic in the amount of effort exerted on the different trials.
Amelia and Andrew praise and stimulate their children, and they mutually support each other’s parenting behaviors. Amelia and Andrew engage in effective __________
A) induction B) permissive parenting C) coparenting D) niche-picking
A new dog owner is trying to use classical conditioning to train her dog to blink whenever she says "Blink." She blows into his eyes, then says "Blink," but the dog is not learning to blink at her command. To improve her training technique,
a. not say "Blink" until after the dog has blinked. b. say "Blink" before blowing into the dog's eyes. c. say "Blink" without blowing into the dog's eyes. d. give the dog a treat whenever he blinks.