The eye and visionI. eye develops as a out grow of diencephalons
III. 3 layers
a. Fibrous tonic
i. Comes from mes. Cells
ii. Extension of dura mater
iii. Cornea anterior and translucent
1. lets light in begins refraction
iv. selra posterior and opaque and fibrous
1. gives shape and protects and serves as attachment fro eye muscles
v. vascular tunic comes from mes. Cell
1. extension of arachnold and piamater
a. iris
i. contains pigment
ii. contains sm mm affects size of pupil; determines how much and which light gets in
Lab work
You need to be able to find
Muscle Innervation | Action | Eye looks |
Superior rectus | CN III | Up
|
Inferior rectus | CN III | Down
|
Medial rectus | CN III | Medially |
Lateral rectus | CN VI | Laterally |
Superior oblique | CN IV | Down and laterally, rolls medially |
Inferior oblique | CN III | Up and laterally, rolls laterally |
Levator palpebrac superior | CN III | Elevates upper eyelid |
Lacrimal apparatus
Note microscope sides not posted here or the eye its self
This page was last modified on Sunday, July 08, 2007 12:54:01 PM