BLG 10A/B Chapter Notes - Chapter 15: Endolymph, Tectorial Membrane, Iter
6 Feb 2015
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Document Summary
Accessory structures: eyebrows, eyelids, conjunctiva, larcimal apparatus, and extrinsic eye muscles. Surface anatomy of the eye includes: eyelids (or palpebrae), which are separated by the palpebral fissure at meet at the lateral and medial commissures. The medial commissure sports a fleshy elevation called the lacrimal caruncle, which has sebaceous glands. The shape of the lens changes according to how close or far we are (accommodation) Sclera: white part of the eye that protects and shapes the eyeball. Choroid: blood vessels that nourish the eye layers, prevents reflection because of melanocytes that absorb the light - why this part is brown as well. Ciliary body: supports the lens, it secretes aqueous humour (nourishes the lens and cornea) Iris: visible colored part, the central opening pupil allows light in. Iris made of 2 smooth muscle and elastic fibers (vary pupil size) Retina: contains millions of photoreceptors that transduce light energy, rods and cones.
