Cranial Nerves

Cranial Nerve IX - Glossopharyngeal nerve SPEECH

dilates the pharynx laterally and contributes to the elevation of the pharynx and larynx; hels clear the pharynx and larynx for swallowing

Cranial Nerve X - vagus nerve

efferent nerve for the pharyngeal constrictors and is afferent to the middle and inferior portions of the pharynx. It also mediates sensation of the epiglottis and innervates the intrinsic muscles of the pharynx

7 pairs: cranial nerve V, VII, VIII, IX, X, XI, XII

for speech and function

Cranial Nerve XII - hypoglossal nerve speech

innervates the muscles responsible for tongue movement

Cranial nerve VIII - vestibular acoustic

takes afferent info from the inner ear to the CNS, responsible for sound sensitivity. Innervates the utricle and the saccule of the inner ear, which are sensitice to static changes in the equilibrium. Controls sensitivity to dynamic changes in the equilibrium

Cranial Nerve IV - Trochlear Nerve

Motor: innervation (to stimulate/supply energy to ) of the superior oblique Function: innerveation of the superior oblique muscles of the eye for eye movement.

Cranial nerve III - Oculomotor nerve

Motor: innervation of all eye movements ( except for the lateral rectus and superior oblique muscles) to move the eyeball,pulil and upper lid of the eyes Parasympathetic: innervention of the iris and lens of the eye. Function: innervation of muscles to move eyeball, pupil, and upper lid.

Cranial Nerve VII- Facial nerve

Motor: innervation of all facial muscles except those for mastication Sensory: taste and sensation from the anterior two- thirds of the tongue Parasympathetic: innervation of the lacrimal and salivary glands Function: movement of all facial muscles except for those for mastification, taste, salivary glands.

Cranial Nerve X -Vagus nerve

Motor: innervation of larynx, pharynx, and soft palate Sensory: visceral sensation from abdominal and thoracic organs, larynx, pharynx, and taste from posterior tongue and pharynx. Parasympathetic: innervation of cardiovascular system, pulmonary system and gastrointestinal system Function: taste, swallowing, elevation of palate, and phonation of parasympathetic outflow to visceral organs.

Cranial Nerve V - Trigeminal nerve

Motor: innervation of muscles of mastication for chewing Sensation: facial touch, temperature, and pain including tooth pulp sensation, cornea and extraocular structures. Function: chewing and sensation to face, teeth and anterior tongue.

Cranial Nerve VI - Abducens nerve

Motor: innervation of the lateral rectus(a flat-shaped muscle, and it is wider in its anterior part.) eye-movement muscles for abduction(move away) of the eye Function : innervation of lateral rectus muscles for abduction of the eye.

Cranial Nerve IX - Glossopharyngeal nerve

Motor: innervation of the pharyngeal musculature to elevate the pharynx and larynx Sensory: taste and sensation from the posterior third of the tongue and sensation from the upper pharynx. Parasympathetic: innervation of the parotid gland. Function: taste, swallowing, elevation of the pharynx and larynx parotid salivary gland, sensation to posterior tongue, upper pharynx

Cranial nerve I - Olfactory nerve

Sensory: Smell Function: Smell

Cranial nerve II - Optic Nerve

Sensory: vision (entire visual output of eye) Function: vision

Cranial Nerve XI - spinal accessory nerve

a motor innervtion to the sternocleidomastoid muscles that help turn, tilt, and thrust forward the ehad or raise the sternum and clavicle if the head is in a fixed position. Shrugging your shoulders

Cranial nerve VII - facial nerve

all movement of facial expressions and allows you to wrinkle your forehead, close your eyes tightly, close your mouth, pull back the corners of your mouth and tense your cheeks, pull down the corners of your mouth and tense your anterior neck muscles. Lifts the larynx up and back. Provides motor innervation to the sublingual and submaxillary salivary glands. Innervates the stapedius muscle in the middle ear, which dampens excessive movement of the ossicles in the presence of loud sounds

Cranial nerve V - trigeminal nerve

mastication and for sensation to the face, teeth, gums, and anterior two thirds of the tongue. Innervates the tensor velar palatini muscle and is partially responsible for flattening and tensing the soft palate an for opening the eustachian tube. Innervates the extrinsic laryngeal muscles (anterior belly of the digastric muscle), and serves to assist in the upward and anterior movement of the larynx

Cranial Nerve XII - hypoglossal nerve

motor: innervation of the tongue for the movement of the tongue function: innervation of the tongue for movement of the tongue

Cranial Nerve XI - Spinal Accessory Nerve

motor: innervation to two major neck muscles to turn the head and shrug the shoulders function: innervation to two major neck muscles to turn the head and shrug the shoulders