NURS 5315 Neurologic system fully solved & updated
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Cranial nerve 1
Olfactory-Purely sensory; carries impulses for sense of smell. Person is asked to sniff aromatic substances, such as oil of cloves and vanilla and to identify them
Cranial nerve 2
Optic- Purely sensory; carries impulses for vision. Vision and visual field tested with an eye...
NURS 5315
Neurologic
system fully
solved &
updated 2024-
2025
Cranial nerve 1 - answer Olfactory-Purely sensory; carries impulses
for sense of smell. Person is asked to sniff aromatic substances,
such as oil of cloves and vanilla and to identify them
Cranial nerve 2 - answer Optic- Purely sensory; carries impulses for
vision. Vision and visual field tested with an eye chart and by
testing point at which person first sees an object moving into visual
field; inside of eye is viewed with ophthalmoscope to observe blood
vessels of eye interior
Cranial nerve 3 - answer Oculomotor-Contains motor fibers to
inferior oblique and to superior, inferior, and medial rectus
extraocular muscles that direct eyeball; levator muscles of eyelid;
smooth muscles of iris and ciliary body; and proprioception to brain
,from extraocular muscles. Pupils examined for size, shape and
equality; pupillary reflex tested with a penlight; ability to follow
moving objects
Cranial nerve 4 - answer Trochlear- Proprioceptor and motor fibers
for superior oblique muscle of eye (extraocular muscle). Tested in
common with cranial nerve 3 relative to ability to follow moving
objects
Cranial nerve 5 - answer Trigeminal-Both motor and sensory for
face; conducts sensory impulses from mouth, nose, surface of eye,
and dura mater; also contains motor fibers that stimulate chewing
muscles. Sensations of pain, touch, and temperature tested with
safety pin and hot and cold objects; corneal reflex tested with a
wisp of cotton; motor branch tested by asking subject to clench
teeth, open mouth against resistance, and move jaw from side to
side
Cranial nerve 6 - answer Abducens-Contains motor fibers to lateral
rectus muscle and proprioceptor fibers from same muscle to brain.
Tested in common with cranial nerve 3 relative to ability to move
each eye laterally
Cranial nerve 7 - answer Facial- Mixed:1.Supplies motor fibers to
muscles of facial expression and to lacrimal and salivary glands and
2. carries sensroy fibers from taste buds of anterior part of tongue.
Anterior 2/3s of tongue tested for ability to taste sweet, salty, and
bitter; symmetry of face checked; subject asked to close eyes,
smile, whistle, and so on; tearing tested with ammonia fumes
Cranial nerve 8 - answer Vestibulocochlear- Purely sensory;
vestibular branch transmits impulses for sense of equilibrium;
cochlear branch transmits impulses for sense of hearing. Hearing
checked by air and bone conduction by use of a tuning fork;
vestibular test: Barany and caloric test
, Cranial nerve 9 - answer Glossopharyngeal: Mixed: 1. motor fibers
serve pharynx(throat) and salivary glands, and 2. sensory fibers
carry impulses from pharynx, posterior tongue(taste buds) and
pressure receptors of carotid artery. Gag and swallow reflexes
checked; subject asked to speak and cough; posterior 1/3 of tongue
may be tested for taste
Cranial nerve 10 - answer Vagus-Fibers carry sensory and motor
impulses for pharynx; a large part of this nerve is parasympathetic
motor fibers, which supply smooth muscles of abdominal organs;
receives sensory impulses from viscera. Testing same as for cranial
nerve 9 bc they both serve muscle of the throat
Cranial nerve 11 - answer Spinal accessory- Provides sensory and
motor fibers for sternocleidomastoid and trapezius muscles and
muscles of soft palate, pharynx and larynx. Sternocleidomastoid and
trapezius muscles checked for strength by asking subject to rotate
head and shrug shoulders against resistance
Cranial nerve 12 - answer Hypoglossal-carries motor fibers to
muscles of tongue and sensory impulses from tongue to brain.
Subject asked to stick out tongue and any position abnormalities
noted
Frontal lobe - answer Directs voluntary skeletal actions. Responsible
for communication, emotions, intellect, reasoning, judgement, and
behavior. It contain Broca's area:responsible for speech. Located
between the central sulcus and lateral sulcus.
Parietal lobe - answer Interprets tactile sensation such as touch,
pain, temperature, shapes and 2 point discrimination. Located
between central parietoociptial and lateral sulci.
Occipital lobe - answer Houses the ability to read with
comprehension and is the primary visual receptor center. Located
caudal to the parietooccipital sulci and superior to the cerebellum
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