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True or False
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1
Red blood cells are the only cells in the body that do not contain a nucleus carrying hereditary material in the form of chromosomes.
A)True
B)False
2
Glial cells send and receive nerve impulses.
A)True
B)False
3
Glial cells outnumber neurons 10 to 1.
A)True
B)False
4
The term "gray matter" comes from the fact that unmyelinated axons are gray in color; myelinated fibers are white.
A)True
B)False
5
Chemical substances that carry messages across the synaptic gap to other neurons, muscles, or glands are known as axons.
A)True
B)False
6
The adult human spinal cord is about 16 to 18 inches long and 1 inch in diameter.
A)True
B)False
7
High levels of alcohol intoxication can lead to death by heart or respiratory failure. This is because the alcohol suppresses activity in Broca's area.
A)True
B)False
8
Some general anesthetics work by deactivating neurons of the ascending reticular formation; this prevents sensory impulses from "registering" as pain.
A)True
B)False
9
Lateralization refers to the exclusive localization of a given function in one brain hemisphere or the other; for example, right-handed people use only the left hemisphere to read and write.
A)True
B)False
10
The motor cortex controls the 6,000 or more muscles involved in involuntary body movements.
A)True
B)False





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