Certified Paraoptometric Anatomy exam with 100% Correct Answers 2023

Anterior Chamber - Correct Answer-behind the cornea, in front of the iris. Filled with clear watery fluid Aqueous Humor - Correct Answer-clear watery fluid produced by ciliary body. provides nutrients for lens and posterior cornea, carries away waste. maintains ocular pressure Choroid - Correct Answer-blood vessels that nourish the retina. between the sclera and retina Ciliary Muscle - Correct Answer-muscle that alters the shape of crystalline lens. Has direct control of focusing ability Conjunctiva - Correct Answer-clear, cellophane like tissue covers sclera and inside surface of lids. Palpebral Conjunctiva - Correct Answer-lines lids Bulbar Conjunctiva - Correct Answer-covers sclera Cornea - Correct Answer-clear, transparent tissue on very front of eye. most powerful refractive media. provides ability to focus on light. Avascular (has no blood vessels) 5 Layers of Cornea - Correct Answer-Front to Back: 1) Epithelium 2) Bowman's layer 3) Stroma 4) Descenet's membrane 5) Endothelium Limbus - Correct Answer-junction of sclera and cornea Crystalline Lens - Correct Answer-Provides focusing power. the 2nd most powerful refractive medium Medial Rectus - Correct Answer-most powerful extraocular muscle. turns eye toward the nose (adduction) Inferior Rectus - Correct Answer-turns eye downward (depresssion). also adducts. can rotate top of eye toward the temple and bottom of the eye towards the nose (extorsion) Lateral Rectus - Correct Answer-moves eye away from nose (abduction)Superior Rectus - Correct Answer-moves eye upwards (elevation). Also adducts. Rotates top of eye toward nose and bottom of eye toward temple (intorsion) Superior Oblique - Correct Answer-Primary role is intorsion. Also depression and abduction Inferior Oblique - Correct Answer-only extraocular muscle that's origin is at front of orbit. Primary role is extorsion. Also elevation and abductino Fovea Centralis - Correct Answer-In macula (approx. 1.5 mm in diameter) where visual acuity is sharpest. Contains highest number of cones which are responsible for daytime and color vision Fundus - Correct Answer-interior surface of eyeball Iris - Correct Answer-colored part of the eye. hole in the middle is pupil. Iris sphincter and dilator muscles control size of pupil for max visual performance Lens - Correct Answer-resilient, transparent structure that focuses light by changes of curvature of front surface. Directly behind the pupil. Macula - Correct Answer-central part of retina. used for seeing detail. Area is 3-5 mm in diameter. Foveal depression is in center Ocular Adnexa - Correct Answer-adjacent structures including: eyelids, lashes, eyebrows, lacrimal apparatus, tarsal plates, orbit, extraocular muscles, conjunctiva. Optic Disk - Correct Answer-appearance of optic nerve when viewing through pupil. Formed by all meetings of retinal nerve fibers. insensitive to light, corresponds to physiological blind spot. used to determine healthiness of nerve Optic Nerve - Correct Answer-carries impulses from retina to brain. transmits signals from rods and cones to brain