Neuroanatomy quiz: Sheep Brain Flashcards
(43 cards)
Cranial nerves mostly emerge from and enter ——-
the brain stem
The cranial nerves vs spinal cord:
Similar structure and function to spinal cord. More complex regulatory systems.
Nerve I (3)
Name + type + function
- Olfactory
- Sensory
- smell
Nerve II (3)
Name + type + function
- Optic
- Sensory
- visoin
Nerve III (3)
Name + type + function
- Oculomotor
- motor
- extraocular muscles (not all_
Nerve IV (3)
Name + type + function
- Trochlear
- Motor
- superior oblique muscle
Nerve V (3)
Name + type + function
- Trigeminal
- Mixed
- (S): Face and mouth
(M): Mastication
Nerve VI (3)
Name + type + function
- Abducens
- Motor
- Lateral Rectus Muscle
Nerve VII (3)
Name + type + function
- Facial
- Mixed
- (S): Taste from anterior 2/3 of tongue, skin of ear
(M): Muscles used for facial expression
(A): Salivary/Lacrimal glands, cerebral vasculature
Nerve VIII (3)
Name + type + function
- Vestibulocochlear
- Sensory
- Hearing and sense of motion
Nerve IX (3)
Name + type + function
- Glossopharyngeal
- Mixed
- (S): Taste from post. 1/3 of tongue, posterior palate
(M): Stylopharyngeus muscle (elevates larynx and pharynx)
(A): Parotid Gland
Nerve X (3)
Name + type + function
- Vagus
- Mixed
- (S): Sensation from pharynx, larynx, thoracic, abdominal organs
(M): Striated muscles of larynx and pharynx
(A): Gastrointestinal, pulmonary, cardiovascular systems
Nerve XI (3)
Name + type + function
- (Spinal) accessory
- Motor
- Trapezius and sternocleidomastoid Muscles
Nerve XII (3)
Name + type + function
- Hypoglossal
- Motor
- Intrinsic muscles of the tongue
Olfactory (I)
Dysfunction + Clinical examination
- Anosmia: Loss of sense of smell
- Various odors applied to each nostril
Optic (II)
Dysfunction + Clinical examination
- Anopsia: Loss of vision
- Visual acuity, map visual field
Oculomotor (III)
Dysfunction + Clinical examination
- Double vision, large pupil, dropping eyelid
- Pupillary reaction to light, medial/verticle reaction to light
Trochlear (IV)
Dysfunction + Clinical examination
- Double vision
- Downward/inward eye movement
Trigeminal (V)
Dysfunction + Clinical examination
- Numbness of face, pain, weak jaw muscles
- Touching skin of face, touching cornea, tapping chin
Abducens (VI)
Dysfunction + Clinical examination
- Double vision
- Lateral movement of eye
Facial (VII)
Dysfunction + Clinical examination
- Facial paralysis, no taste on anterior 1/3 of tongue
- Facial movement and expression, test for taste
Vestibulocochlear (VIII)
Dysfunction + Clinical examination
- Deafness, tinnitus, disorientation
- Audiogram, caloric test
Glossopharyngeal (IX)
Dysfunction + Clinical examination
- pain in post. Pharynx fall in blood pressure
- Test tastes on tongue, touch walls of pharynx (gag reflex)
Vagus (X)
Dysfunction + Clinical examination
- Hoarseness, poor swallowing, no gag reflex
- Observe palate during speech, touch palate (partial reflex)
