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Multiple Choice Quiz
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1
Which of the following is correctly matched?
A)vertebrates - ventral solid nerve cord
B)cnidarians - nerve net
C)earthworm - dorsal hollow nerve cord
D)none of the above
2
The ladderlike nervous system of a planarian is comprised of _____.
A)two lateral nerve cords
B)transverse nerve
C)both A and B
3
Which of the following is a complex animal with a true nervous system?
A)sponge
B)hydra
C)squid
D)tapeworm
4
The presence of _____ indicates an organism has cephalization.
A)a head
B)sensory cells
C)a concentration of ganglia
D)all of the above
5
Which of the following has a dorsal hollow nerve cord in the central nervous system?
A)planarian
B)cow
C)crab
D)sponge
6
Arthropods have a _____.
A)ventral nerve cord
B)dorsal nerve cord
C)nerve ladder
D)nerve net
7
Organisms that are adapted to an active way of life are characterized by _____.
A)cephalization
B)bilateral symmetry
C)both A and B
8
The central nervous system consists of a brain and a spinal cord.
A)True
B)False
9
The _____ is highly developed in mammals, particularly humans.
A)forebrain
B)hindbrain
C)midbrain
10
The nervous system integrates and controls the other systems of the body.
A)True
B)False
11
The brain is at the _____ end of the dorsal tubular nerve cord.
A)anterior
B)posterior
12
The _____ regulates organs below the level of consciousness.
A)forebrain
B)midbrain
C)hindbrain
13
The central nervous system performs the integration of sensory input and initiation of motor output.
A)True
B)False
14
The somatic system controls _____
A)smooth muscle
B)skeletal muscle
C)the glands
D)cardiac muscle
15
The autonomic system initiates the heartbeat.
A)True
B)False
16
The autonomic system contains nerves that control smooth muscle.
A)True
B)False
17
The sympathetic and parasympathetic systems are divisions of the _____
A)somatic system
B)central nervous system
C)autonomic system
18
Which of the following is/are part of the peripheral nervous system?
A)sciatic nerve
B)ulnar nerve
C)cranial nerves
D)all of the above
19
The somatic and autonomic systems are composed of sensory fibers.
A)True
B)False
20
Neuroglial cells have _____ functions.
A)supportive
B)nutritive
C)both A and B
21
Dendrites conduct impulses away from the cell body.
A)True
B)False
22
One of the main functions of the _____ is to manufacture neurotransmitters.
A)dendrites
B)cell body
C)axon
D)myelin sheath
23
Nerve impulses are conducted toward the cell body by _____.
A)dendrites
B)axons
24
Neurolemmocytes form the myelin sheath around axons in the central and peripheral nervous systems.
A)True
B)False
25
The secretion of gastric juices by the stomach is stimulated by _____.
A)sensory neurons
B)interneurons
C)motor neurons
26
A naked nerve ending is an example of a(n) _____.
A)sensory neuron
B)motor neuron
C)interneuron
27
The neurons responsible for thinking, memory and language processes are _____.
A)sensory neurons
B)interneurons
C)motor neurons
28
Interneurons are found ______.
A)in the CNS
B)in the PNS
C)both A and B
29
During the resting potential, there is a higher concentration of _____ ions outside the axon.
A)iodine
B)hydrogen
C)calcium
D)sodium
30
The inside of the neuron is more _____ than the outside during the resting potential.
A)negative
B)positive
31
ATP is expended to maintain a concentration of Na+ outside the axon and K+ inside the axon during the resting potential.
A)True
B)False
32
If a neuron is stimulated and threshold is not reached, _____ happens.
A)nothing
B)an action potential
C)saltatory conduction
D)repolarization
33
During the refractory period, the nerve fiber cannot conduct an impulse.
A)True
B)False
34
When threshold is reached, _____.
A)an action potential occurs
B)sodium channels open
C)the inside of the neuron becomes positive
D)all of the above
35
The intensity of a message is determined by ______.
A)the intensity of the stimulation
B)the number of nerve impulses generated within a given time span
C)both A and B
36
An action potential travels down a(n) _____ fiber faster.
A)unmyelinated
B)myelinated
37
During repolarization, _____.
A)sodium channels open and sodium enters the axon
B)sodium and potassium channels remain closed
C)potassium channels open and potassium leaves the axon
38
On myelinated fibers, an action potential occurs at one node and then jumps to the next node.
A)True
B)False
39
Neurotransmitters _____.
A)are released by presynaptic neurons
B)are produced in the cell body
C)bind to receptors on the postsynaptic neuron
D)all of the above
40
Acetylcholinesterase stimulates the postsynaptic neuron.
A)True
B)False
41
Drugs that affect the nervous system ______.
A)can enhance of block neurotransmitter release
B)mimic the action of a neurotransmitter
C)interfere with the removal of a neurotransmitter from synaptic cleft
D)all of the above
42
Integration is the summing up of _____ signals received by a postsynaptic neuron.
A)inhibitory
B)excitatory
C)both A and B
43
Excitatory neurotransmitters _____.
A)stimulate signals that have a hyperpolarizing effect
B)produce signals that drive a neuron closer to an action potential
C)both A and B
44
An inhibitory neurotransmitter produces signals that make the postsynaptic less likely to fire.
A)True
B)False
45
The cell bodies of neurons are found in _____.
A)ganglia
B)the brain
C)the spinal cord
D)all of the above
46
The cranial nerves all contain sensory and motor nerve fibers.
A)True
B)False
47
The dorsal-root ganglion contains the cell body of a _____ neuron.
A)sensory
B)motor
48
All spinal nerves contain _____ fibers.
A)sensory
B)motor
C)both A and B
49
The muscle contraction that pulls your hand off the hot burner is initiated by _____.
A)the somatic system
B)the autonomic system
50
Voluntary control of skeletal muscle responses originate in the _____.
A)spinal cord
B)brain
C)both A and B
51
The "fight or flight" response is initiated by _____.
A)the sympathetic system
B)the parasympathetic system
C)both A and B
52
The responses of the sympathetic nervous system are designed to direct more oxygen and glucose to active muscles.
A)True
B)False
53
The parasympathetic nervous system _____.
A)increases the heartbeat
B)decreases the heartbeat
C)initiates the heartbeat
54
Acetylcholine is a neurotransmitter used by the _____.
A)somatic motor pathways
B)sympathetic motor pathways
C)parasympathetic motor pathways
D)both A and C
55
The effector(s) of the sympathetic and parasympathetic nervous systems is/are _____.
A)cardiac muscle
B)glands
C)smooth muscle
D)all of the above
56
The precapillary sphincters of the digestive system shut off blood flow to the digestive system when the parasympathetic nervous system is active.
A)True
B)False
57
Which of the following is associated with the sympathetic nervous system?
A)decreased blood pressure
B)increased perspiration
C)increased blood flow to the digestive system
D)decreased respiration
58
When you're relaxing and watching TV your _____ system will be active.
A)sympathetic
B)parasympathetic
59
Except for the vagus nerve, only spinal nerves make up the autonomic nervous system which controls the internal organs.
A)True
B)False
60
The brain and spinal cord are wrapped in protective membranes called the pleural membranes.
A)True
B)False
61
Cell bodies and short unmyelinated fibers comprise the _____ of the spinal cord.
A)gray matter
B)white matter
62
The right side of the brain controls the right side of the body and the left side of the brain controls the left side of the body.
A)True
B)False
63
The right and left hemispheres of the cerebrum are connected by the _____.
A)meninges
B)thalamus
C)corpus callosum
D)cerebellum
64
The _____ is responsible for muscle coordination.
A)cerebellum
B)cerebrum
C)medulla oblongata
D)pons
65
The pituitary gland serves as a link between the nervous and endocrine systems.
A)True
B)False
66
Centers for regulating hunger, sleep, thirst, body temperature, water balance and blood pressure are found in the _____.
A)cerebrum
B)pons
C)hypothalamus
D)medulla oblongata
67
Which of the following is not associated with the brain stem?
A)pons
B)fourth ventricle
C)medulla oblongata
D)cerebellum.
68
You may be able to study with the TV on because your reticular formation filters out unnecessary sensory information.
A)True
B)False
69
The largest part of the brain in humans is the _____.
A)cerebrum
B)thalamus
C)medulla oblongata
D)cerebellum
70
The cerebrum _____.
A)initiates voluntary skeletal muscle reactions
B)performs higher thought processes required for learning and memory
C)coordinates the activites of the other parts of the brain
D)all of the above
71
Reflex centers for vomiting, coughing, sneezing, hiccuping, and swallowing are located in the _____.
A)cerebrum
B)hypothalamus
C)medulla oblongata
D)spinal cord
72
The function of the cerebrum is the same in all vertebrates.
A)True
B)False
73
The ability of humans to think critically and formulate appropriate behaviors is dependent of the _____ lobe of the cerebrum.
A)occipital
B)frontal
C)parietal
D)temporal
74
Which of the following is incorrectly matched?
A)primary visual area - occipital lobe
B)auditory association area - temporal lobe
C)motor speech area - frontal lobe
D)primary taste area - frontal lobe
75
The limbic system maintains homeostasis.
A)True
B)False
76
The _____ adds emotional overtones to memories.
A)pons
B)cerebellum
C)thalamus
D)amygdala
77
The cerebral cortex is more convoluted in humans than other vertebrates.
A)True
B)False
78
Long-term memory involves _____.
A)episodic memory
B)semantic memory
C)both A and B
79
A gradual extinction of brain cells in the hippocampus appears to be the underlying cause of Alzheimer disease.
A)True
B)False
80
The body's production of endorphins decreases with heroin use.
A)True
B)False







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