Chapter 17- Key Vocabs The Eye Flashcards Preview

Medical Terminology Part 9 > Chapter 17- Key Vocabs The Eye > Flashcards

Flashcards in Chapter 17- Key Vocabs The Eye Deck (24)
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1
Q

Accommodation

A

Normal adjustment of the eye to focus on objects from far to near

2
Q

Anterior chamber

A

Area behind the cornea and in front of the lens and iris. It contains aqueous humor

3
Q

Aqueous humor

A

Fluid produced by the ciliary body and found in the anterior chamber.

4
Q

Biconvex

A

Consisting of two surfaces that are rounded, elevated, and curved evenly, like part of a sphere.

5
Q

Choroid

A

Middle, vascular layer of the eye, between the retina and the sclera

6
Q

Ciliary body (!!!)

A

Structure of each side of the lens that connects the choroid and iris; controls shape of lens and secretes aqueous humor

7
Q

Cone

A

Photoreceptor cell in the retina that transforms light energy into a nerve impulse; responsible for color and central vision

8
Q

Conjunctiva

A

Delicate membrane that lines the undersurface of eyelids and covers anterior eyeball

9
Q

Cornea

A

Fibrous transparent layer of clear tissue that extends over the anterior portion of eyeball.

10
Q

Fovea Centralis

A

Tiny pit or depression in the retina that is the region of the clearest vision

11
Q

Fundus of the eye

A

Posterior, inner part of the eye

12
Q

Iris

A

Pigmented (colored) layer that opens and closes to allow more or less light into the eye

13
Q

Lens

A

Transparent, biconvex body behind the pupil of the eye

14
Q

Macula

A
  1. Yellowish region on the retina lateral to and slightly below the optic disc
  2. Contains the fovea centralis
15
Q

Optic chiasm

A

Point at which optic nerve fibers cross in the brain

16
Q

Optic disc

A

The region at the back of the eye where the optic nerve meets the retina; blind spot

17
Q

Optic nerve

A

Cranial nerve carrying impulses from the retina to the brain

18
Q

Pupil

A

Central opening of the eye, surrounded by the iris, through which light rays pass

19
Q

Refraction

A

Bending of light rays by the cornea, lens, and fluids of the eye to bring the rays into focus on the retina.

20
Q

Retina

A

Light-sensitive nerve cell layer of the eye containing photoreceptor cells

21
Q

Rod

A

Photoreceptor cell of retina essential for vision in dim light and for peripheral vision.

22
Q

Sclera

A

Tough, white outer coat of the eyeball

23
Q

Thalamus

A

Relay center of the brain.

24
Q

Vitreous humor

A

Soft, jelly-like material behind the lens in the vitreous chamber; helps maintain the shape of the eyeball