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Med Terms > Chapter 11 Primary Terms > Flashcards

Chapter 11 Primary Terms Flashcards

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1
Q

Adnexa of the eyes

A

Structures outside the eyeball, includes: orbit, eye muscles, eyelids, eyelashes, conjuctiva, and lacrimal apparatus

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2
Q

Adnexa

A

Accessory or adjoining anatomical parts of an organ

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3
Q

Orbit

A

Bony, cavity of the skull that contains and protects the eyeball and its associated muscles, blood vessels, and nerves

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4
Q

Upper and lower eyelids, Eyebrows, and Eyelashes

A

Protect the eyeball from foreign matter, excessive light, and other injuries

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4
Q

Binocular Vision

A

Occurs when the muscles of both eyes work together in coordination to make normal depth perception possible

Bin means two, ocul means eye

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5
Q

Cilia

A

Small hairs, make up the eyebrows and eyelashes

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5
Q

Canthus

A

Angle where the upper and lower eyelids meet

Canth means corner of the eye

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6
Q

Tarsus

A

The framework within the upper and lower eyelids that provides the necessary stiffness and shape

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7
Q

Conjuctiva

A

Transparent mucous membrane that lines the underside of each eyelid and continues to form a protective covering over the exposed surface

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8
Q

Lacrimal Apparatus

A

Consists of the structures that produce, store, and remove tears

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9
Q

Lacrimal Glands

A

Secrete lacrimal fluid (tears), located on the underside of the upper eyelid just above the outer corner of each eye

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10
Q

Lacrimal Fluid

Tears

A

Maintain moistureon the anteriror surface of the eyeball

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11
Q

Lacrimal Canal

A

Consists of a duct at the inner corner of each eye, collects tears and empties them into the lacrimal sacs

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12
Q

Lacrimal Sac

A

Enlargement of the upper portion of the lacrimal duct

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13
Q

Lacrimal Duct

A

Passageway that drains excess tears into the nose

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14
Q

Optic

A

Pertaining to the eye or sight

Opt means eye, -ic means pertaining to

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15
Q

Ocular

A

Pertaining to the eye

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16
Q

Extraocular

A

Outside the eyeball

Extra means outside, ocul means eye, -ar means pertaining to

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17
Q

Intraocular

A

Within the eyeball

intra means within, ocul means eye, -ar means pertaining to

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18
Q

Sclera

White of the Eye

A

Maintains the shape of the eye and protects the delicate inner layers of tissue

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19
Q

Choroid

A

Opaque, middle layer of the eyeball that contains blood vessels and provides the blood supply to the entire eye

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20
Q

Retina

A

Sensitive innermost layer that lines the posterior segment of the eye, recieves nerve impules and transmits them to the brain

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21
Q

Intraocular Pressure

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A

Measurement of the fluid pressure inside the eye, pressure is regulated by the rate at which aqueous humor enters and leaves the eye

22
Q

Posterior Segment

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A

Lined with the retina and filled with vitreous humor

23
Rods and Cones
Recieve images that have passed through the lens of the eye, **rods** are black and white, **cones** are colored
23
Macula
Clearly defined ligh sensitive area in the center of the retina that is reponsible for sharp central vision
24
Fovea Centralis
Pit in the middles of the macula
25
Optic Disk | *Blind Spot*
Small region in the eye where the nerve endings of the retina enter the optic region
26
Optic Nerve
Transmits nerve impulses from the retina to the brain
27
Cilliary Body
Located within the choroid, is a thick set of muscles and suspensory ligaments that adjusts the thickness of the lends to refine the focus
27
Uvea
Pigmented layer of the eye, rich blood supply and consists of the choroid, ciliary body, and iris
28
Cornea
Transparent outer surface of the eye covering the iris and pupil
29
Pupil
Black circular opening in the center of the iris that permits light to enter the eye
30
Accomodation
Process where the eyes make adjustments for seeing objects at various distances
31
Lens
Clear, flexible, curved structure that focuses images on the retina, located behind the iris and pupil
32
Convergance
Simultaneous inward movement of the eyes toward each other
33
Emmetropia
Normal relationship between the refractive power of the eye and shape of the eye that enables light rays to focus correctly on the retina | **Emmetr** means in proper measure, **opia** means vision condition
34
Refraction
Ability of the lens to bend light rays so they focus on the retina
35
Visual Acuity
Ability to distinguish object details and shapes at a distance
36
Opthalmologist
Physician who specializes in diagnosing and treatinf the full spectrum of diseases and disorders of the eyes | **Opthalm** means eye, **ologist** means specialist
37
Optometrist
Holds a doctor of optpmetry degree and provides primart eye care, including diagnosing eye diseases and conditions and measuring the accuracy of the vision
38
Optician
Health care practitioner who designs, fits, and dispenses lenses for vision correction
38
Ptosis
Dropping of the upper eyelid that is usually due to muscle weakness or sagging
39
Chalazion
Nodule or cyst, usually on the upper eyelid, caused by an obstruction of the sebaceous gland
40
Hordeolum | *Stye*
Pus-filled and often painful lesion on the eyelid resulting from an acute infection in a sebaceous gland
41
Blepharitis
Swelling of the eyelid | **Blephar** means eyelid, **itis** means inflammation
42
Ectropion
Eversion of the edge of an eyelid | **Ec** means out, **trop** means turn, -**ion** means condition
43
Entropion
Inversion of the edge of an eyelid | **En** means in, **trop** means turn, **ion** means condition
43
Periorbital Edema
Swelling of the tissues surrounding the eye or eyes | **peri** means surrounding, **orbit** means eyeball
43
Conjuctivitis | *Pink Eye*
Inflammation of the conjuctiva that is usually caused by a viral infection, allergy, or irritants
44
Dacryocystitis
Inflammation of the lacrimal sac usually caused by blockage of the lacrimal sac
44
Dacryoadenitis
Inflammation of the lacrimal gland caused by bacterial, viral, or fungal infection
45
Subconjunctival Hemorrhage
Bleeding between the conjuctiva and the sclera
46
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Med Terms (26 decks)

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