In addition to neurons, the brain contains an even larger number of another cell type known as
A. mitochondria.
B. glia.
C. serotonin.
D. pseudopodia.
B
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Abraham Lincoln suffered through periods of profound depression throughout his life. What do some historians believe his mood disorder can be traced to?
a. his poverty-stricken upbringing on the Western frontier b. his father losing his property due to faulty property titles c. the death of his mother when he was nine years old d. insomnia
What is an accurate statement regarding interneurons found in the central nervous system?
a. They form bridges between sensory and motor neurons. b. They block motor output to allow for sensory input. c. They block sensory input to allow for motor output. d. They act as either sensory or motor neurons.
A regular television viewer finds the need to snack while watching his programs because of all the commercials for food. This demonstrates the influence of ________ on eating behavior
a. psychological factors c. biological factors b. physiological factors d. none of these
The saclike structures found inside the synaptic knob containing chemicals are called__________
a) axon terminals. b) synapses. c) synaptic vesicles. d) receptor sites.