WGU D443
Health Assessment OA | Practice Questions, Answers &
Detailed Rationales | WGU Nursing Exam Prep
Resource Features
➢WGU D443 practice questions
➢OA-focused study preparation
➢Detailed answers
➢Comprehensive rationales
➢Clinical assessment scenarios
, WGU D443 Health Assessment OA | Practice
Questions, Answers & Detailed Rationales |
WGU Nursing Exam Prep
Question 1
What is the function of the olfactory (I) cranial nerve?
A) Sense of smell
B) Vision
C) Hearing and equilibrium
D) Movement of the tongue
Correct Answer: A) Sense of smell
Rationale: The olfactory nerve (Cranial Nerve I) is responsible for the sense
of smell (olfaction). It is a sensory nerve that transmits olfactory information
from the nasal cavity to the brain. Damage to this nerve can result in
anosmia (loss of smell). Vision (option B) is CN II. Hearing and equilibrium
(option C) is CN VIII. Movement of the tongue (option D) is CN XII.
Question 2
What is the function of the optic (II) cranial nerve?
A) Sense of smell
B) Vision
,C) Hearing and equilibrium
D) Movement of the tongue
Correct Answer: B) Vision
Rationale: The optic nerve (Cranial Nerve II) is responsible for vision. It
transmits visual information from the retina to the brain. This is a sensory
nerve that is essential for sight. Sense of smell (option A) is CN I. Hearing
and equilibrium (option C) is CN VIII. Movement of the tongue (option D) is
CN XII.
Question 3
What is the function of the oculomotor (III) cranial nerve?
A) Sense of smell
B) Vision
C) Motor: moving eyelids; Parasympathetic: pupil constriction and lens
shape
D) Lateral movement of the eye
Correct Answer: C) Motor: moving eyelids; Parasympathetic: pupil
constriction and lens shape
Rationale: The oculomotor nerve (Cranial Nerve III) has both motor and
parasympathetic functions. It controls most extraocular eye movements
(except lateral and downward-inward movements), eyelid elevation (levator
palpebrae), and parasympathetic innervation to the pupil (constriction) and
lens (accommodation). Lateral movement of the eye (option D) is CN VI.
, Question 4
What is the function of the trochlear (IV) cranial nerve?
A) Sense of smell
B) Vision
C) Down and inward movement of the eye
D) Lateral movement of the eye
Correct Answer: C) Down and inward movement of the eye
Rationale: The trochlear nerve (Cranial Nerve IV) innervates the superior
oblique muscle, which is responsible for downward and inward (medial)
movement of the eye. It is the smallest cranial nerve and the only one that
exits from the dorsal aspect of the brainstem. Lateral movement of the eye
(option D) is CN VI.
Question 5
What is the function of the trigeminal (V) cranial nerve?
A) Sense of smell
B) Motor: muscles of mastication; Sensory: sensation of face, scalp, cornea,
mucous membranes of mouth and nose
Health Assessment OA | Practice Questions, Answers &
Detailed Rationales | WGU Nursing Exam Prep
Resource Features
➢WGU D443 practice questions
➢OA-focused study preparation
➢Detailed answers
➢Comprehensive rationales
➢Clinical assessment scenarios
, WGU D443 Health Assessment OA | Practice
Questions, Answers & Detailed Rationales |
WGU Nursing Exam Prep
Question 1
What is the function of the olfactory (I) cranial nerve?
A) Sense of smell
B) Vision
C) Hearing and equilibrium
D) Movement of the tongue
Correct Answer: A) Sense of smell
Rationale: The olfactory nerve (Cranial Nerve I) is responsible for the sense
of smell (olfaction). It is a sensory nerve that transmits olfactory information
from the nasal cavity to the brain. Damage to this nerve can result in
anosmia (loss of smell). Vision (option B) is CN II. Hearing and equilibrium
(option C) is CN VIII. Movement of the tongue (option D) is CN XII.
Question 2
What is the function of the optic (II) cranial nerve?
A) Sense of smell
B) Vision
,C) Hearing and equilibrium
D) Movement of the tongue
Correct Answer: B) Vision
Rationale: The optic nerve (Cranial Nerve II) is responsible for vision. It
transmits visual information from the retina to the brain. This is a sensory
nerve that is essential for sight. Sense of smell (option A) is CN I. Hearing
and equilibrium (option C) is CN VIII. Movement of the tongue (option D) is
CN XII.
Question 3
What is the function of the oculomotor (III) cranial nerve?
A) Sense of smell
B) Vision
C) Motor: moving eyelids; Parasympathetic: pupil constriction and lens
shape
D) Lateral movement of the eye
Correct Answer: C) Motor: moving eyelids; Parasympathetic: pupil
constriction and lens shape
Rationale: The oculomotor nerve (Cranial Nerve III) has both motor and
parasympathetic functions. It controls most extraocular eye movements
(except lateral and downward-inward movements), eyelid elevation (levator
palpebrae), and parasympathetic innervation to the pupil (constriction) and
lens (accommodation). Lateral movement of the eye (option D) is CN VI.
, Question 4
What is the function of the trochlear (IV) cranial nerve?
A) Sense of smell
B) Vision
C) Down and inward movement of the eye
D) Lateral movement of the eye
Correct Answer: C) Down and inward movement of the eye
Rationale: The trochlear nerve (Cranial Nerve IV) innervates the superior
oblique muscle, which is responsible for downward and inward (medial)
movement of the eye. It is the smallest cranial nerve and the only one that
exits from the dorsal aspect of the brainstem. Lateral movement of the eye
(option D) is CN VI.
Question 5
What is the function of the trigeminal (V) cranial nerve?
A) Sense of smell
B) Motor: muscles of mastication; Sensory: sensation of face, scalp, cornea,
mucous membranes of mouth and nose
