Physiology Exam 2 Ch.8 Questions with Answers
The portions of a neuron that extend off of the roughly spherical cell body are usually collectively called
A) protrusions.
B) processes.
C) prostheses.
D) projections - correct answersB) processes
True or False:
Detailed understanding of the cellular basis of signaling in the nervous system has led to good
understanding of consciousness, intelligence, and emotion. - correct answersFalse
Neurotransmitter is stored and released from
A) axon terminals only.
B) axon varicosities only.
C) dendritic spines only.
D) cell bodies only.
E) axon terminals and axon varicosities - correct answersE) axon terminals and axon varicosities
Information coming into the central nervous system is transmitted along ________ neurons.
A) afferent
B) sensory
C) efferent
D) afferent and sensory
E) sensory and efferent - correct answersD) afferent and sensory
The afferent and efferent axons together form the
A) central nervous system.
B) autonomic division system.
C) somatic motor division of the nervous system.
,D) peripheral nervous system.
E) visceral nervous system. - correct answersD) peripheral nervous system
The brain and spinal cord together compose the
A) central nervous system.
B) autonomic division system.
C) somatic motor division of the nervous system.
D) peripheral nervous system.
E) visceral nervous system. - correct answersA) central nervous system
Exocrine glands, smooth muscles, and cardiac muscles are controlled by the
A) central nervous system.
B) autonomic nervous system.
C) somatic motor division.
D) peripheral nervous system.
E) enteric nervous system. - correct answersB) autonomic nervous system
Autonomic motor neurons are subdivided into the
A) visceral and somatic divisions.
B) sympathetic and parasympathetic divisions.
C) central and peripheral divisions.
D) visceral and enteric divisions.
E) somatic and enteric divisions. - correct answersB) sympathetic and parasympathetic divisions
The enteric nervous system is a network of neurons that function in controlling
A) reproduction.
B) digestion.
C) excretion, particularly urination.
D) the skeletal system.
, E) the endocrine system - correct answersB) digestion
In general, the nervous system is composed of which two types of cells?
1. motor
2. neurons
3. sensory
4. glial
5. associative - correct answers2 and 4
The cell body of neurons is generally
A) 90% of the cell volume.
B) 50% of the cell volume.
C) 10% of the cell volume.
D) found in the same position on every neuron. - correct answersC) 10% of the cell volume
Interneurons are found
A) only in the brain.
B) only in the spinal cord.
C) only in the CNS.
D) throughout the nervous system.
E) only in spinal nerves. - correct answersC) only in the CNS
The multiple thin, branched structures on a neuron whose main function is to receive incoming signals
are the
A) cell bodies.
B) axons.
C) dendrites.
D) somata.
E) None of the answers are correct - correct answersC) dendrites
The portions of a neuron that extend off of the roughly spherical cell body are usually collectively called
A) protrusions.
B) processes.
C) prostheses.
D) projections - correct answersB) processes
True or False:
Detailed understanding of the cellular basis of signaling in the nervous system has led to good
understanding of consciousness, intelligence, and emotion. - correct answersFalse
Neurotransmitter is stored and released from
A) axon terminals only.
B) axon varicosities only.
C) dendritic spines only.
D) cell bodies only.
E) axon terminals and axon varicosities - correct answersE) axon terminals and axon varicosities
Information coming into the central nervous system is transmitted along ________ neurons.
A) afferent
B) sensory
C) efferent
D) afferent and sensory
E) sensory and efferent - correct answersD) afferent and sensory
The afferent and efferent axons together form the
A) central nervous system.
B) autonomic division system.
C) somatic motor division of the nervous system.
,D) peripheral nervous system.
E) visceral nervous system. - correct answersD) peripheral nervous system
The brain and spinal cord together compose the
A) central nervous system.
B) autonomic division system.
C) somatic motor division of the nervous system.
D) peripheral nervous system.
E) visceral nervous system. - correct answersA) central nervous system
Exocrine glands, smooth muscles, and cardiac muscles are controlled by the
A) central nervous system.
B) autonomic nervous system.
C) somatic motor division.
D) peripheral nervous system.
E) enteric nervous system. - correct answersB) autonomic nervous system
Autonomic motor neurons are subdivided into the
A) visceral and somatic divisions.
B) sympathetic and parasympathetic divisions.
C) central and peripheral divisions.
D) visceral and enteric divisions.
E) somatic and enteric divisions. - correct answersB) sympathetic and parasympathetic divisions
The enteric nervous system is a network of neurons that function in controlling
A) reproduction.
B) digestion.
C) excretion, particularly urination.
D) the skeletal system.
, E) the endocrine system - correct answersB) digestion
In general, the nervous system is composed of which two types of cells?
1. motor
2. neurons
3. sensory
4. glial
5. associative - correct answers2 and 4
The cell body of neurons is generally
A) 90% of the cell volume.
B) 50% of the cell volume.
C) 10% of the cell volume.
D) found in the same position on every neuron. - correct answersC) 10% of the cell volume
Interneurons are found
A) only in the brain.
B) only in the spinal cord.
C) only in the CNS.
D) throughout the nervous system.
E) only in spinal nerves. - correct answersC) only in the CNS
The multiple thin, branched structures on a neuron whose main function is to receive incoming signals
are the
A) cell bodies.
B) axons.
C) dendrites.
D) somata.
E) None of the answers are correct - correct answersC) dendrites
