Anatomy & Physiology for Speech, Language,
and Hearing
7th Edition
• Author(s)J. Anthony Seikel, David G.
Drumright, Daniel J. Hudock
TEST BANK
Chapter 11. Neuroanatomy
Overview
Sense, Sensor, and Stimulation
Divisions of the Nervous System
Central Nervous System and Peripheral Nervous System
Autonomic and Somatic Nervous Systems
Development Divisions
Anatomy of the Central Nervous System and Peripheral Nervous System
Neurons……..
,
,Question 1
Which of the following structures is part of the peripheral
nervous system (PNS)?
A. Corpus callosum
B. Corticospinal tract
C. Spinal nerves (31 pairs)
D. Thalamus
Correct Answer: C
Rationale: The PNS consists of nerves outside the brain and
spinal cord. The 31 pairs of spinal nerves (C) arise from the
spinal cord and innervate the body, so they are PNS. The corpus
callosum (A) is a central nervous system (CNS) fiber tract
connecting the hemispheres. The corticospinal tract (B) is a
descending CNS pathway. The thalamus (D) is a central brain
structure. Thus C is correct. A is incorrect because the corpus
callosum lies in the CNS. B is incorrect because the corticospinal
tract is within the spinal cord and brain. D is incorrect because
the thalamus is a diencephalic (central) structure.
Question 2
Which glial cell type produces myelin in the central nervous
system (CNS)?
, A. Astrocyte
B. Schwann cell
C. Oligodendrocyte
D. Microglia
Correct Answer: C
Rationale: In the CNS, myelin is formed by oligodendrocytes (C).
Each oligodendrocyte myelinates multiple CNS axons. Schwann
cells (B) produce myelin in the peripheral nervous system, not
the CNS, so (B) is incorrect. Astrocytes (A) provide support and
form the blood–brain barrier but do not myelinate axons.
Microglia (D) are immune cells of the CNS; they clear debris but
do not form myelin. Thus the only cell that forms CNS myelin is
the oligodendrocyte (C).
Question 3
The “fight-or-flight” response is primarily mediated by which
part of the nervous system?
A. Parasympathetic nervous system
B. Somatic nervous system
C. Sympathetic nervous system
D. Enteric nervous system
Correct Answer: C
Rationale: The sympathetic nervous system (C) is the branch of
the autonomic nervous system that governs the fight-or-flight
and Hearing
7th Edition
• Author(s)J. Anthony Seikel, David G.
Drumright, Daniel J. Hudock
TEST BANK
Chapter 11. Neuroanatomy
Overview
Sense, Sensor, and Stimulation
Divisions of the Nervous System
Central Nervous System and Peripheral Nervous System
Autonomic and Somatic Nervous Systems
Development Divisions
Anatomy of the Central Nervous System and Peripheral Nervous System
Neurons……..
,
,Question 1
Which of the following structures is part of the peripheral
nervous system (PNS)?
A. Corpus callosum
B. Corticospinal tract
C. Spinal nerves (31 pairs)
D. Thalamus
Correct Answer: C
Rationale: The PNS consists of nerves outside the brain and
spinal cord. The 31 pairs of spinal nerves (C) arise from the
spinal cord and innervate the body, so they are PNS. The corpus
callosum (A) is a central nervous system (CNS) fiber tract
connecting the hemispheres. The corticospinal tract (B) is a
descending CNS pathway. The thalamus (D) is a central brain
structure. Thus C is correct. A is incorrect because the corpus
callosum lies in the CNS. B is incorrect because the corticospinal
tract is within the spinal cord and brain. D is incorrect because
the thalamus is a diencephalic (central) structure.
Question 2
Which glial cell type produces myelin in the central nervous
system (CNS)?
, A. Astrocyte
B. Schwann cell
C. Oligodendrocyte
D. Microglia
Correct Answer: C
Rationale: In the CNS, myelin is formed by oligodendrocytes (C).
Each oligodendrocyte myelinates multiple CNS axons. Schwann
cells (B) produce myelin in the peripheral nervous system, not
the CNS, so (B) is incorrect. Astrocytes (A) provide support and
form the blood–brain barrier but do not myelinate axons.
Microglia (D) are immune cells of the CNS; they clear debris but
do not form myelin. Thus the only cell that forms CNS myelin is
the oligodendrocyte (C).
Question 3
The “fight-or-flight” response is primarily mediated by which
part of the nervous system?
A. Parasympathetic nervous system
B. Somatic nervous system
C. Sympathetic nervous system
D. Enteric nervous system
Correct Answer: C
Rationale: The sympathetic nervous system (C) is the branch of
the autonomic nervous system that governs the fight-or-flight
