Cranial Nerves Flashcards
1
Q
CN I Olfactory
A
- olfactory foramina in cribriform plate of ethmoid bone
- smell
2
Q
CN II Optic
A
- optic foramen
- sight
3
Q
CN III Oculomotor
A
- superior orbital fissure
- eye muscles: superior rectus, inferior rectus, medial rectus, inferior oblique
- raising upper eyelid
- Parasympathetics: pupil, lens
4
Q
CN IV Trochlear
A
- superior orbital fissure
- superior oblique of eye
5
Q
CN V1 Opthalmic division of trigeminal
A
- superior orbital fissure
- skin: nose and forehead
- cornea
- paranasal sinuses
6
Q
CN V2 maxillary division of trigeminal
A
- foramen rotundum
- skin: upper lip, over zygomatic bone, side of head behind eyes
- nasal cavity
- paranasal sinuses
- mx teeth
- palate
7
Q
CN V3 mandibular division of trigeminal
A
- foramen ovale
- skin: lower lip, chin, mandible, TMJ, temporal region
- md teeth
- touch of body of tongue
Muscles of mastication - temporalis
- masseter
- pterygoids
Mylohyoid
Anterior belly digastric
8
Q
CN VI Abducens
A
- superior orbital fissure
- lateral rectus of the eye
9
Q
CN VII Facial
A
- internal auditory meatus
- taste from body of tongue - chorda tympani
- Muscles of facial expression
- posterior belly digastric
- stylohyoid
- auricularis muscles
- occipitalis
- Parasympathetics: lacrimal, submandibular, sublingual glands
10
Q
CN VIII Vestibulocochlear
A
- internal auditory meatus
- balance
- hearing
11
Q
CN IX Glossopharyngeal
A
- jugular foramen
- touch and taste root of tongue
- carotid sinus, carotid body
- pharynx muscle
- Parasympathetics: parotid gland
12
Q
CN X Vagus
A
- jugular foramen
- sensory: pharynx, larynx, GI
- Aortic arch, aortic body
- muscles of pharynx
- muscles of soft palate
- muscles of larynx
- Parasympathetics: heart, lungs, GI up to left colic flexture
13
Q
CN XI Accessory
A
- C1-6
- enters through foramen magnum, exits through jugular foramen
- Trapezius, SCM
14
Q
CN XII Hypoglossal
A
- hypoglossal foramen
- intrinsic muscles of tongue
- extrinsic muscles of tongue
