EXAM 4 NU110/NU110: INTEGRATED
HUMAN SCIENCES, (LATEST UPDATE
2026/2027) WITH CORRECT/ACCURATE
ANSWERS
AT GALEN COLLEGE OF NURSING
NU110/NU110: INTEGRATED HUMAN
SCIENCES
Questions 1–25
1. A cholinergic fiber within the autonomic nervous system releases which
neurotransmitter?
A. Epinephrine
B. Acetylcholine
C. Norepinephrine
D. Dopamine
Answer: B. Acetylcholine
Rationale: Cholinergic fibers release acetylcholine (ACh), which binds to cholinergic receptors on target
organs. This is the primary neurotransmitter of the parasympathetic nervous system and preganglionic
sympathetic fibers.
2. What term describes the hopping of the action potential (nerve impulse) along the axon
from one node (of Ranvier) to the next?
A. Myelination
B. Depolarization
C. Saltatory conduction
D. Repolarization
,Answer: C. Saltatory conduction
Rationale: Saltatory conduction occurs along myelinated axons where action potentials “jump” between
nodes of Ranvier, increasing conduction speed.
3. The temporal lobe:
A. is a brain stem structure.
B. is a cerebellar structure.
C. contains the primary auditory cortex.
D. is a large mass of white matter that joins the right and left cerebral hemispheres.
Answer: C. contains the primary auditory cortex
Rationale: The temporal lobe processes auditory information and memory. The corpus callosum is the white
matter structure connecting hemispheres.
4. Injury to the occipital lobe is most likely to cause:
A. hearing loss
B. paralysis
C. loss of vision
D. disturbances in gait
Answer: C. loss of vision
Rationale: The occipital lobe contains the primary visual cortex; injury results in visual deficits.
5. The tenth cranial nerve, the _____ nerve, “wanders” outside the head area and
innervates the heart and gastrointestinal systems.
A. Trigeminal
B. Vagus
C. Olfactory
D. Spinal accessory
Answer: B. Vagus
Rationale: The vagus nerve (cranial nerve X) has parasympathetic fibers supplying thoracic and abdominal
organs, influencing heart rate, digestion, and other autonomic functions.
6. The oculomotor, trochlear, and abducens are cranial nerves that:
, A. innervate the extrinsic eye muscles (move the eyeball)
B. innervate the levator palpebrae superioris (lift the eyelid)
C. interpret sensory information from the optic nerve
D. innervate the muscles of mastication
Answer: A. innervate the extrinsic eye muscles (move the eyeball)
Rationale: Cranial nerves III, IV, and VI control eye movement; the levator palpebrae is innervated
specifically by the oculomotor (III).
7. An area of skin innervated by a spinal nerve is called a:
A. plexus
B. tract
C. dermatome
D. myotome
Answer: C. dermatome
Rationale: A dermatome is a skin region supplied by a single spinal nerve. Myotomes refer to muscle
groups.
8. The primary function of Schwann cells is to:
A. Conduct action potentials
B. Produce cerebrospinal fluid
C. Myelinate peripheral axons
D. Remove debris in the CNS
Answer: C. Myelinate peripheral axons
Rationale: Schwann cells form the myelin sheath in the peripheral nervous system, which increases
conduction speed.
9. The pacemaker of the heart is the:
A. AV node
B. SA node
C. Purkinje fibers
D. Bundle of His
Answer: B. SA node
Rationale: The sinoatrial node initiates the heartbeat by spontaneously generating action potentials, setting
the heart rate.
HUMAN SCIENCES, (LATEST UPDATE
2026/2027) WITH CORRECT/ACCURATE
ANSWERS
AT GALEN COLLEGE OF NURSING
NU110/NU110: INTEGRATED HUMAN
SCIENCES
Questions 1–25
1. A cholinergic fiber within the autonomic nervous system releases which
neurotransmitter?
A. Epinephrine
B. Acetylcholine
C. Norepinephrine
D. Dopamine
Answer: B. Acetylcholine
Rationale: Cholinergic fibers release acetylcholine (ACh), which binds to cholinergic receptors on target
organs. This is the primary neurotransmitter of the parasympathetic nervous system and preganglionic
sympathetic fibers.
2. What term describes the hopping of the action potential (nerve impulse) along the axon
from one node (of Ranvier) to the next?
A. Myelination
B. Depolarization
C. Saltatory conduction
D. Repolarization
,Answer: C. Saltatory conduction
Rationale: Saltatory conduction occurs along myelinated axons where action potentials “jump” between
nodes of Ranvier, increasing conduction speed.
3. The temporal lobe:
A. is a brain stem structure.
B. is a cerebellar structure.
C. contains the primary auditory cortex.
D. is a large mass of white matter that joins the right and left cerebral hemispheres.
Answer: C. contains the primary auditory cortex
Rationale: The temporal lobe processes auditory information and memory. The corpus callosum is the white
matter structure connecting hemispheres.
4. Injury to the occipital lobe is most likely to cause:
A. hearing loss
B. paralysis
C. loss of vision
D. disturbances in gait
Answer: C. loss of vision
Rationale: The occipital lobe contains the primary visual cortex; injury results in visual deficits.
5. The tenth cranial nerve, the _____ nerve, “wanders” outside the head area and
innervates the heart and gastrointestinal systems.
A. Trigeminal
B. Vagus
C. Olfactory
D. Spinal accessory
Answer: B. Vagus
Rationale: The vagus nerve (cranial nerve X) has parasympathetic fibers supplying thoracic and abdominal
organs, influencing heart rate, digestion, and other autonomic functions.
6. The oculomotor, trochlear, and abducens are cranial nerves that:
, A. innervate the extrinsic eye muscles (move the eyeball)
B. innervate the levator palpebrae superioris (lift the eyelid)
C. interpret sensory information from the optic nerve
D. innervate the muscles of mastication
Answer: A. innervate the extrinsic eye muscles (move the eyeball)
Rationale: Cranial nerves III, IV, and VI control eye movement; the levator palpebrae is innervated
specifically by the oculomotor (III).
7. An area of skin innervated by a spinal nerve is called a:
A. plexus
B. tract
C. dermatome
D. myotome
Answer: C. dermatome
Rationale: A dermatome is a skin region supplied by a single spinal nerve. Myotomes refer to muscle
groups.
8. The primary function of Schwann cells is to:
A. Conduct action potentials
B. Produce cerebrospinal fluid
C. Myelinate peripheral axons
D. Remove debris in the CNS
Answer: C. Myelinate peripheral axons
Rationale: Schwann cells form the myelin sheath in the peripheral nervous system, which increases
conduction speed.
9. The pacemaker of the heart is the:
A. AV node
B. SA node
C. Purkinje fibers
D. Bundle of His
Answer: B. SA node
Rationale: The sinoatrial node initiates the heartbeat by spontaneously generating action potentials, setting
the heart rate.
