Cranial Nerves Flashcards
1
Q
Olfactory Nerve (CN I)
A
- Distinctive ODOR applied to ONE NOSTRIL at a Time; Anosmia (Loss of Olfaction)
2
Q
Optic Nerve (CN II)
A
- Visual acuity; Visual Fields; Light Reflexes (Direct and Consensual); Ophthalmoscopy of Fundi
3
Q
Oculomotor Nerve (CN III)
A
- Cardinal SIGN OF GAZE
- Pupillary Responses to Light and Accommodation
a) Complete PTOSIS; PUPILLARY DILATION; External STRABISMUS (Diplopia when looking Straight Ahead)
4
Q
Trochlear Nerve (CN IV)
A
- Cardinal Signs of GAZE
- ADDUCT and DEPRESS the EYE
5
Q
Trigeminal Nerve (CN V)
A
- Trigeminal Sensory Dermatomes; CORNEAL REFLEX (AFFERENT Component; Direct and Consensual)
- Muscles of MASTICATION (Clinch Jaw and Palpate Master and Temporals Muscle)
- Masseteric (JAW- JERK) REFLEX!!!!!!!!
6
Q
Abducens Nerve (CN VI)
A
- Cardinal Signs of Gaze; Paralysis of LATERAL GLAZE
7
Q
Facial Nerve (CN VII)
A
- Mimetic Muscles (Frontalis, Orbicularis Oculi and Oris, ZYgomaticus Major)
a) RAISE the EYEBROWS, CLOSE EYES TIGHTLY, PURSE LIPS, Smile, Puff out Cheeks - CORNEAL REFLEX (EFFERENT Component; Direct and Consensual)
- TASTE, ANTERIOR 2/3 Tongue; Dimished or ABSENT LACRIMATION!!!!!
8
Q
Vestibulo-Cochlear Nerve (CN XIII)
A
- Otoscopic Examination; RINNE and WEBER TUNING FORK Tests; Posture, Coordination, Caloric Tests; Audiometry
9
Q
Glossopharyngeal Nerve (CN IX)
A
- GAG REFLEX (AFFERENT Component)
- Loss of Sensation in the PHARYNX, TONSILS, FAUCES and POSTERIOR 1/3 of the TONGUE; Absent GAG REFLEX; Slight DYSPHAGIA
10
Q
Vagus Nerve (CN X)
A
- Laryngoscopic Exam of VOCAL CORDS
- DYSPHONIA (Hoarseness) and NASAL SPEECH; DYSPHAGIA (Difficulty Swallowing, examination for Dysphagia); DYSPNEA (Difficulty Breathing)
- LOSS of GAG and COUGH REFLEXES!!!!!
11
Q
Spinal Accessory Nerve (CN XI)
A
- Test STERNOCLEIDOMASTOID and TRAPEZIUS Muscles
12
Q
Hypoglossal Nerve (CN XII)
A
- Atrophy, Fasciculations; When PROTRUDED, the TONGUE DEVIATES TOWARDS the AFFECTED SIDE
