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Cranial Nerves
All 12 Cranial Nerves with Branches, Primary Function, Foramen, and Innervation
15
Anatomy
Undergraduate 2
05/08/2010

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Cards

Term

 

 

 

Cranial Nerve I

Definition

Olfactory Nerve

 

Primary function: Special Sensory

Foramen: Olfactory foramina of ethmoid

Innervation: Olfactory epithelium

Term

 

 

 

Cranial Nerve II

Definition

Optic Nerve

 

Primary Function: Special Sensory

Foramen: Optic Canal

Innervation: Retina of Eye

Term

 

 

 

Cranial Nerve III

Definition

Oculomotor

 

Primary Function: Motor and Proprioception

Foramen: Superior Orbital Fissure

Innervation: Inferior, medial, superior rectus, inferior oblique and levator palpebrae superioris muscles; intrinsic eye muscles

Term

 

 

 

Cranial Nerve IV

Definition

Trochlear

 

Primary Function: Motor and Proprioception

Foramen: Superior Orbital Fissure

Innervation: Superior oblique muscle

Term

 

 

 

Branches of Cranial Nerve V

Definition

Trigeminal

 

                                Branches:

 

                             1. Ophthalmic

                             2. Maxillary

                             3. Mandibular             

Term

 

 

 

Branch #1 of Cranial Nerve V

Definition

Ophthalmic

 

Primary Function: Sensory

Foramen: Superior Orbital Fissure

Innervation: Orbital structures, nasal cavity, skin of forehead, upper eyelid, eyebrows, nose (part)

Term

 

 

 

Branch #2 of Cranial Nerve V

Definition

Maxillary

 

Primary Function: Sensory

Foramen: Foramen rotundum

Innervation: Lower eyelid; superior lip, gums, and teeth; cheek, nose (part), palate, and pharynx (part)

Term

 

 

 

Branch # 3 of Cranial Nerve V

Definition

Mandibular

 

Primary Function: Mixed

Foramen: Foramen ovale

Innervation: Sensory: inferior gums, teeth, lips, palate (part), and tongue (part)

Motor: muscles of mastication

Term

 

 

 

Cranial Nerve VI

Definition

Abducens

 

Primary Function: Motor and Proprioception

Foramen: Superior Orbital Fissure

Innervation: Lateral rectus muscle

Term

 

 

 

Cranial Nerve VII

Definition

Facial

 

Primary Function: Mixed

Foramen: Internal acoustic meatus to facial canal; exits at stylomastoid foramen

Innervation: Sensory...taste receptors on anterior 2/3 of tongue & Motor...muscles of facial expression, lacrimal gland, submandibular gland, sublingual salivary glands

Term

 

 

 

Cranial Nerve VIII

Definition

Vestibulocochlear

 

Branches: Cochlear & Vestibular

Priamary Functions: Special Sensory

Foramen: Internal acoustic meatus

Innervation: Cochlea (receptors for hearing), Vestibule (receptors for motor and balance)

Term

 

 

 

Cranial Nerve IX

Definition

Glossopharyngeal

 

Primary Function: Mixed

Foramen: Jugular Foramen

Innervation: Sensory...posterior 1/3 of tongue; pharynx and palate (part); receptors for blood pressure, pH, oxygen, and carbon dioxide concentrations; Motor...pharyngeal muscles and parotid salivary gland

Term

 

 

 

Cranial Nerve X

Definition

Vagus

 

Primary Function: Mixed

Foramen: Jugular Foramen

Innervation: Sensory...pharynx; auricle and external acoustic meatus; diaphragm; visceral organs in thoracic and abdominopelvic cavities; Motor...palatal and pharyngeal muscles and visceral organs in thoracic and abdominopelvic cavities

Term

 

 

 

Cranial Nerve XI

Definition

Accessory

 

Branches: Internal & External

Primary Functions of both: Motor and Proprioception

Foramen: Jugular Foramen

Innervation of Internal branch: Skeletal muscles of palate, pharynx, and larynx (with vagus nerve)

Innervation of external branch: Sternocleidomastoid and trapezius muscles 

Term

 

 

 

Cranial Nerve XII

Definition

Hypoglossal

 

Primary Function: Motor and Proprioception

Foramen: Hypoglossal canal

Innervation: Tongue musculature

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