1. Special Senses Biology 2121 Lab

2. The Eye - Structure Layers of the Wall of the Eyeball – 1. Fibrous – 2. Vascular – 3. Inner Layer (Retina)

3. Layers of the Eyball 1. Fibrous Layer – Sclera ------  Cornea 2. Vascular Layer – “Uvea” Posterior: Choroid Ciliary Body Anterior: Iris

4. Layers of the Eyeball 3. Retina – Outer: Pigmented Layer – Inner: Neural Layer 4. Inner Layer – Photoreceptor Cells Rods and Cones

5. Retinal Layer Macula Lutea and Fovea Centralis – Cones – Sharp Vision

6. Internal Chambers – Fluids Aqueous Humor – Anterior Eye – Clear Fluid; Ciliary process produces – Constantly drained Vitreous Humor – Embryonic Development

7. Lens Biconvex Transparent Avascular

8. Outer Structure Superior Rectus Muscle – Attaches to Frontal bone – Indicates medial Extrinsic Eye Muscles – Insert into the Sclera

9. Sheep’s Eyeball

10. The Ear Sections of the Ear – 1. Outer Ear – 2. Middle Ear – 3. Inner Ear Cranial Nerve VIII – Vestibulocochlear Nerve

11. Parts of the Ear

12. Outer Ear Helix 1.Pinna (Auricle) 2. Helix and Lobule 3. Ends where the tympanic membrane begins

13. Middle Ear – Ossicles 1.Malleus – hammer 2.Incus – anvil 3.Stapes - stirrup

14. Inner Ear Semi-circular canals Vestibule – Saccule – Utricle Cochlea – Cochlear Duct Organ of Corti