BIOD 152 Module 1 Exam Bank 2026 | Nervous
System Ultimate Study Guide with 300+ Q&As &
Rationales (Portage Learning) – GRADED A+
INSTANT PDF DOWNLOAD
The following is a comprehensive, high-density selection of high-yield
multiple-choice questions designed to align with the core curriculum of
BIOD 152 Module 1 (Anatomy & Physiology II: Nervous System). Each
question is immediately followed by its verified answer and clinical
rationale, optimized for standard academic testing platforms.
This comprehensive 300-question multiple-choice exam bank provides
verified answers and deep physiological rationales covering the entire
human nervous system curriculum. It isolates high-yield test topics
including action potential phases, reflex arc loops, cranial nerve lesions,
and autonomic pathways. It is structured specifically with bold italic
formatting to maximize student study efficiency and boost digital resale
value.
,Module 1: Nervous System Exam Prep
Question 1
An inability to initiate voluntary muscle movement most likely points to
damage in which structural area of the nervous system?
A. Postcentral gyrus
B. Precentral gyrus
C. Cerebellar cortex
D. Basal ganglia
ANSWER: B. Precentral gyrus
RATIONALE: The precentral gyrus of the frontal lobe houses the
primary motor cortex, which is directly responsible for controlling
voluntary motor movements. Damage here causes paralysis or
paresis. The postcentral gyrus handles somatosensory perception.
Question 2
Which type of neuroglial cell is responsible for myelinating axons within
the central nervous system (CNS)?
A. Schwann cells
B. Microglia
C. Oligodendrocytes
D. Astrocytes
ANSWER: C. Oligodendrocytes
RATIONALE: Oligodendrocytes form the myelin sheath around axons
,in the central nervous system, whereas Schwann cells perform this
exact function exclusively in the peripheral nervous system (PNS).
Question 3
During the depolarization phase of an action potential, which ionic
movement occurs across the axonal membrane?
A. Potassium ions rush into the cell
B. Sodium ions rush into the cell
C. Potassium ions rush out of the cell
D. Sodium ions rush out of the cell
ANSWER: B. Sodium ions rush into the cell
RATIONALE: Depolarization is triggered by the rapid opening of
voltage-gated sodium channels, allowing \(Na^{+}\) ions to rush
down their electrochemical gradient into the intracellular space,
making the membrane potential more positive.
Question 4
A patient presents with a loss of general sensation to the anterior two-
thirds of the tongue. Which cranial nerve is likely impaired?
A. CN VII (Facial)
B. CN IX (Glossopharyngeal)
C. CN V (Trigeminal)
D. CN XII (Hypoglossal)
ANSWER: C. CN V (Trigeminal)
RATIONALE: General sensation (touch, pain, temperature) to the
, anterior two-thirds of the tongue is carried by the lingual nerve, a
branch of the mandibular division of the Trigeminal nerve (CN V).
Taste for this region is carried by CN VII.
Question 5
Which of the following spaces contains circulating cerebrospinal fluid
(CSF) around the spinal cord?
A. Epidural space
B. Subdural space
C. Subarachnoid space
D. Central canal only
ANSWER: C. Subarachnoid space
RATIONALE: The subarachnoid space lies between the arachnoid
mater and the pia mater, housing the main circulation of
cerebrospinal fluid around both the brain and the spinal cord.
Question 6
What unique structural adaptation allows saltatory conduction to occur
along an axon?
A. Continuous unmyelinated membranes
B. Nodes of Ranvier
C. Gap junctions
D. Synaptic clefts
ANSWER: B. Nodes of Ranvier
RATIONALE: Nodes of Ranvier are unmyelinated gaps along the axon
System Ultimate Study Guide with 300+ Q&As &
Rationales (Portage Learning) – GRADED A+
INSTANT PDF DOWNLOAD
The following is a comprehensive, high-density selection of high-yield
multiple-choice questions designed to align with the core curriculum of
BIOD 152 Module 1 (Anatomy & Physiology II: Nervous System). Each
question is immediately followed by its verified answer and clinical
rationale, optimized for standard academic testing platforms.
This comprehensive 300-question multiple-choice exam bank provides
verified answers and deep physiological rationales covering the entire
human nervous system curriculum. It isolates high-yield test topics
including action potential phases, reflex arc loops, cranial nerve lesions,
and autonomic pathways. It is structured specifically with bold italic
formatting to maximize student study efficiency and boost digital resale
value.
,Module 1: Nervous System Exam Prep
Question 1
An inability to initiate voluntary muscle movement most likely points to
damage in which structural area of the nervous system?
A. Postcentral gyrus
B. Precentral gyrus
C. Cerebellar cortex
D. Basal ganglia
ANSWER: B. Precentral gyrus
RATIONALE: The precentral gyrus of the frontal lobe houses the
primary motor cortex, which is directly responsible for controlling
voluntary motor movements. Damage here causes paralysis or
paresis. The postcentral gyrus handles somatosensory perception.
Question 2
Which type of neuroglial cell is responsible for myelinating axons within
the central nervous system (CNS)?
A. Schwann cells
B. Microglia
C. Oligodendrocytes
D. Astrocytes
ANSWER: C. Oligodendrocytes
RATIONALE: Oligodendrocytes form the myelin sheath around axons
,in the central nervous system, whereas Schwann cells perform this
exact function exclusively in the peripheral nervous system (PNS).
Question 3
During the depolarization phase of an action potential, which ionic
movement occurs across the axonal membrane?
A. Potassium ions rush into the cell
B. Sodium ions rush into the cell
C. Potassium ions rush out of the cell
D. Sodium ions rush out of the cell
ANSWER: B. Sodium ions rush into the cell
RATIONALE: Depolarization is triggered by the rapid opening of
voltage-gated sodium channels, allowing \(Na^{+}\) ions to rush
down their electrochemical gradient into the intracellular space,
making the membrane potential more positive.
Question 4
A patient presents with a loss of general sensation to the anterior two-
thirds of the tongue. Which cranial nerve is likely impaired?
A. CN VII (Facial)
B. CN IX (Glossopharyngeal)
C. CN V (Trigeminal)
D. CN XII (Hypoglossal)
ANSWER: C. CN V (Trigeminal)
RATIONALE: General sensation (touch, pain, temperature) to the
, anterior two-thirds of the tongue is carried by the lingual nerve, a
branch of the mandibular division of the Trigeminal nerve (CN V).
Taste for this region is carried by CN VII.
Question 5
Which of the following spaces contains circulating cerebrospinal fluid
(CSF) around the spinal cord?
A. Epidural space
B. Subdural space
C. Subarachnoid space
D. Central canal only
ANSWER: C. Subarachnoid space
RATIONALE: The subarachnoid space lies between the arachnoid
mater and the pia mater, housing the main circulation of
cerebrospinal fluid around both the brain and the spinal cord.
Question 6
What unique structural adaptation allows saltatory conduction to occur
along an axon?
A. Continuous unmyelinated membranes
B. Nodes of Ranvier
C. Gap junctions
D. Synaptic clefts
ANSWER: B. Nodes of Ranvier
RATIONALE: Nodes of Ranvier are unmyelinated gaps along the axon
