1. Nervous System PNS

2. Incredible Human Machine  SIGHT  https://www.youtube.com/watch?v=JddHE5l0y68 https://www.youtube.com/watch?v=JddHE5l0y68  HEARING (6:09)  https://www.youtube.com/watch?v=JddHE5l0y68 https://www.youtube.com/watch?v=JddHE5l0y68  SMELL (8:28)  https://www.youtube.com/watch?v=9MDn5Ggyxy U - https://www.youtube.com/watch?v=9MDn5Ggyxy U -

3. MUSCLETurns EYE… Controlled by… 1. SUPERIOR RECTUS Superiorly (up) III Oculomotor 2. INFERIOR RECTUS Inferiorly (down) III 3. LATERAL RECTUS Laterally (to side) VI Abducens 4. MEDIAL RECTUS Medially (towards center) III 5. SUPERIOR OBLIQUE Inferiorly & laterally IV Trochlear 6. INFERIOR OBLIQUE Superiorly & laterally III

4. Eye partClass NotesTextbook Notes 1. Sclera The “white” of eye(: 2. Cornea Most anterior part of the sclera – your “window” to the world 3. Lens Refracts light 4. Iris Pigmented “diaphragm” of eye 5. Ciliary body Contains muscle that controls the shape of the lens 6. Ciliary zonule Attaches the lens to the ciliary body 7. Aqueous humor Fluid in the anterior segment that provides nutrients to the lens and cornea

5. Eye PartClass NotesTextbook Notes 8. Vitreous humor Gel-like substance that helps reinforce the eyeball 9. Cones & Rods Photoreceptor cells in the retina; CONES = daylight & color / RODS = dim light 10. Retina Layer containing the rods & cones at the back of the eye 11. Choroid Nutritive (vascular) layer of the eye 12. Fovea centralis Area of acute vision; a dimple in the retina where cones are concentrated 13. Optic disk “BLIND SPOT” ; Area of retina that lacks photoreceptors 14. Canal of Schlemm Drains the aqueous humor of the eye

6.  http://colorvisiontesting.com/ishihara.htm http://colorvisiontesting.com/ishihara.htm What causes colorblindness???

8. DisorderCauseEffect Night blindness (p. 284) Skip 4 lines Color blindness (p. 284) Cataracts (p. 286) Glaucoma (p. 286) Strabismus (p. 301)