Biology (Mader), 10th Edition

Chapter 37: Neurons and Nervous Systems

Post-Test

1
Which of the following is a complex animal with a true nervous system?
A)Hydra
B)Squid
C)Earthworm
2
Arthropods have a _____.
A)ventral nerve cord
B)dorsal nerve cord
C)nerve ladder
D)nerve net
3
Which of the following has a dorsal hollow nerve cord in the central nervous system?
A)Planarian
B)Cow
C)Crab
D)Earthworm
4
The _____ is highly developed in mammals, particularly humans.
A)forebrain
B)hindbrain
C)midbrain
5
The somatic system controls _____.
A)smooth muscle
B)skeletal muscle
C)the glands
D)cardiac muscle
6
The sympathetic and parasympathetic systems are divisions of the _____.
A)somatic system
B)central nervous system
C)autonomic system
7
One of the main functions of the _____ in the peripheral nervous system is to synthesize the myelin sheath.
A)dendrites
B)oligodendrocytes
C)axon
D)Schwann cells
8
The neurons responsible for thinking, memory and language processes are _____.
A)sensory neurons
B)interneurons
C)motor neurons
9
During the resting potential, there is a higher concentration of _____ ions outside the axon.
A)iodine
B)hydrogen
C)calcium
D)sodium
10
If a neuron is stimulated and threshold is not reached, _____ happens.
A)nothing
B)an action potential
C)saltatory conduction
11
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
12
Drugs that affect the nervous system ______.
A)can enhance or block neurotransmitter release
B)mimic the action of a neurotransmitter
C)interfere with the removal of a neurotransmitter from synaptic cleft
D)All of these
13
Excitatory neurotransmitters _____.
A)stimulate signals that have a hyperpolarizing effect
B)produce signals that drive a neuron closer to an action potential
C)reduce the neuron's ability to have an action potential
D)All of these
14
The cell bodies of neurons are found in _____.
A)ganglia
B)the brain
C)the spinal cord
D)All of these
15
The muscle contraction that pulls your hand off the hot burner is initiated by _____.
A)the somatic system
B)the autonomic system
C)sympathetic
16
The _____ adds emotional overtones to memories.
A)pons
B)cerebellum
C)thalamus
D)amygdala
17
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
18
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
19
The right and left hemispheres of the cerebrum are connected by the _____.
A)meninges
B)thalamus
C)corpus callosum
D)cerebellum
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