Download Cranial Nerves: Functions, Disorders, and Damages and more Assignments Neuroanatomy in PDF only on Docsity!
Name : Wajeeha Waheed Registration : DPT Semester: 4(A) Assignment : Anatomy
Cranial Nerves:-
The cranial nerves are 12 pairs of nerves that can be seen on the central surface of the brain. Some of the cranial nerves brings information from the sense organs to the brain , some control muscles and other cranial nerves are connected to glands or internal organs such as Lungs and heart.
1: Olfactory Nerve (V1) :
Function :
Sense of Smell
Disorder :
Damage causes impaired sense of Smell.
2: Optic Nerve (V2) :
Function :
Provides Vision
Disorder :
Damage causes blindness in visual field
3: Oculomotor Nerve (V3) :
Function :
Somatic And Autonomic Motor Function Eye Movement and Pupil Constriction
Disorder :
Damage causes : Dropping eyelid Dilated pupil Double vision Difficulty focusing Inability to move eye in different directions
4: Trochlear Nerve (V4) :
Function :
Eye movement (Superior Oblique Muscles)
Gums and Lips Tongue Motor function of Temporalis and Masseter Muscles
Damage :
Damage includes Loss of Senstation and impaired chewing.
6 : Abducens Nerve (V6) :
Function :
Eye Movement
Damage :
Damage includes : Inability to rotate eye laterally At rest eye rotates medially
7 : Facial Nerve (V7) :
Function :
Taste 2/3 of the anterior tongue Somatosensory information from ear Facial expressions Salivary and lacrimal glands
Damage :
Damage includes: Sagging facial muscles Disturbed sense of taste
8: Vestibulochoclear Nerve (V8) :
Function :
Provides hearing Sense of balance
Damage :
Damage includes : Dizziness Nausea Deafness and Loss of balance
10: Vagus Nerve (V10) :
Function :
Sensory, motor and autonomic functions of visceral glands Sensations from baroreceptors and chemoreceptors Taste from epiglottis and pharynx Swallowing and voice production via pharyngeal muscles
Damage :
Damage causes : Impaired Swallowing Loss of voice Blood pressure anomalies Hoarseness
11: Accessory Nerve :
Function :
Swallowing Head, shoulder and neck movement via Trapezius and Sternocleidomastoid and Pharyngeal muscles
Damage :
Damage causes :
Imapaired neck , shoulder and head movement
12: Hypoglossal Nerve :
Function :
Tongue movement for speech Food manipulation
Swallowing
Damage :
If both are damaged can’t protrude tongue If one is damaged , tongue deviates towards injured side
