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1
The brain and spinal cord make up the
A)central nervous system.
B)motor nervous system.
C)sensory nervous system.
D)peripheral nervous system.
2
The part of the brain responsible for association and higher thought is the
A)cerebrum.
B)cerebellum.
C)thalamus.
D)hypothalamus.
3
The part of the nervous system that stimulates glands and relays commands to smooth muscles is the
A)cerebrum.
B)voluntary nervous system.
C)autonomic nervous system.
D)peripheral nervous system.
4
The ____________ are the only major phylum of multicellular animals that lack nerves.
A)sponges
B)cnidarians
C)flatworms
D)roundworms
5
More than half of the volume of the human nervous system is composed of
A)sensory neurons.
B)motor neurons.
C)interneurons.
D)neuroglia cells.
6
Deep-seated drives and emotions are controlled by the limbic system, which is made up of the__________________.
A)hippocampus.
B)amygdala.
C)hypothalamus.
D)All of the above
7
The part of the brain that controls breathing, swallowing, and heartbeat is the
A)cerebral cortex.
B)cerebellum.
C)brain stem.
D)hypothalamus.
8
The "fight-or-flight" reaction is controlled by the
A)parasympathetic nervous system.
B)sympathetic nervous system.
C)central nervous system.
D)All of the above
9
What is the function of baroreceptors?
A)To control respiration rate
B)To control muscle contraction
C)To control heart rate
D)To control blood pressure
10
The brain is able to determine its vertical position through the
A)semicircular canals.
B)otolith sensory receptors.
C)baroreceptors.
D)stretch receptors.
11
The myelin sheath is formed by successive wrappings around the ___________ of neurons.
A)cell body
B)axon
C)dendrite
D)All of the above
12
Nerve impulses result from ion movements across neuron cell membranes.
A)True
B)False
13
A nerve impulse jumps across the synapse between two neurons as it makes its way along neuron pathways.
A)True
B)False
14
An individual nerve cell can synapse with only one other nerve cell.
A)True
B)False
15
The spinal cord functions in supporting the back.
A)True
B)False
16
A stroke is caused by
A)blockage of the heart by clots.
B)buildup of cholesterol in blood vessels.
C)blockage of blood vessels in the brain by clots.
D)insufficient thyroid hormone.
E)lack of oxygen.
17
__________________ connect sensory neurons with motor neurons.
A)Interneurons
B)Schwann cells
C)Nodes of Ranvier
D)Neuroglial cells
E)None of the above
18
The ability to sense distant objects by bouncing sounds off of them is called
A)hearing.
B)a lateral line system.
C)echolocation.
D)All of the above
19
Simple eyespots are a simple visual system in a/an
A)sponge.
B)hydra.
C)flatworm.
D)grasshopper.
20
Eyes located on the sides of an organism's head allow for binocular vision.
A)True
B)False





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