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Nervous System Aantomy

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by

Indaka Thudellage

on 24 April 2018

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Transcript of Nervous System Aantomy

Nervous System Anatomy
Sensory organs
part II
Objectives
Identify the parts of the ear
Describe the basic mechanism of sound and balance
Identity the parts of the eye
Describe the basic mechanism of sight

Ear
External ear
middle ear
Internal ear
pinna / Auricle

Ext.Auditory canal

Tympanic membrane
(ear drum)


elastic cartilage, direct sound waves towards Ext,Aud. Canal
Eustachian tube

Auditory Ossicles
Mallius
Incus
Stapes
Cochlea




Vestibule
hearing component

Organ of Corti
Hair cells
Oval window
Round window
sound receptor cells
Snail shaped tube
two fluid filled sacs
Utricle
Saccule
three semicircular canals
anterior canal
Posterior canal
Lateral canal
Anatomy of the eye
Sclera

Cornea

Optic Nerve

Choroid

Retina


Iris

Pupil

Ciliary Body

Lens

Anterior Chamber

Posterior Chamber

Vitreous Chamber
Outer most layer. White part of the eye

Continuation of sclera , Anterior Transparent section
Middle vascular layer, reflective layer
Tapetum Lucidum
Inner most layer,
Optic Disc
(blind spot)
Rod Cells
- Detect intensity of light
Cone Cells
- Detect color
Dark circular structure deep to cornea
opening of the Iris
Cilliary mussel holding the lens
Convex shape, opaque, focus light
between cornea and irish,
Aqueous humor
between irish and the lens
large hollow chamber,
Vitereous humor
Full transcript