Special Senses

Question 1

Accommodation

Answer 1

Adjustment of the eye for various distances so that images fall on the retina of the eye

Question 2

Acuity

Answer 2

Clearness of sharpness or a sensory function

Question 3

Adnexa

Answer 3

Tissues or structures in the body adjacent to or near a related structure

Question 4

Humor

Answer 4

Any fluid or semi fluid of the body

Question 5

Labyrinth

Answer 5

Series of intricate communicating passages

Question 6

Opaque

Answer 6

Substance or surface that neither transmits nor allows the passage of light

Question 7

Perilymph

Answer 7

Fluid that very closely resembles spinal fluid but found in the cochlea

Question 8

Photo pigment

Answer 8

Light sensitive pigment in the retinal comes and rods that absorbs light and initiated the visual process; also called visual pigment

Question 9

Refractive

Answer 9

Ability to bend light rays as they pass from one medium to another

Question 10

Tunic

Answer 10

Layer or coat of tissue; also called membrane layer

Question 11

Fibrous tunic

Answer 11

The outermost layer of the eyeball

Serves as a protective coat for the more sensitive structures beneath.

Includes
1. Sclera— white is the eye, provides strength, shape, and structure of the eye

2. Cornea— transparent, allowing light to enter the interiors of the eye. One of the few body structure that does not contain capillaries and must rely on eye fluids for nourishment
3. Conjuntiva— covers the outer surface of the eye and lines the eyelids

Question 12

Vascular tunic

Answer 12

Middle layer of the eyeball, also knows as the uvea

Consists of the choroid, iris, and ciliary body

Choroid— provides the blood supply for the entire eye.

Iris— is a colored, contractile membrane with a perforated center called the pupil

Ciliary body— is a circular muscle that produces aqueous humor . Attached to a capsular bag that holds the Lena between the suspensorio ligaments

Question 13

Sensory tunic

Answer 13

Innermost sensory tunic is the delicate, double layered retina.

Consists of a thin outer pigment layer lying over the choroid and a thick, inner nervous layer, or visual portion.

Question 14

Rods

Cones

Answer 14

Rods
Function in dim light and produce black and white vision

Cones
Function in bright light and produce color vision

Question 15

Macula

Answer 15

Located in the central portion of the retina which is a highly sensitive structure

In the center of the macula is the fovea

When the eye focuses on an object l, light rays from that object are directed to the fovea

Question 16

External ear

Answer 16

Outer ear

Conducts sound waves through air

Question 17

Tympanic cavity

Answer 17

Middle ear

Conduct sound waves through bone

Question 18

Labyrinth

Answer 18

Inner ear

Conduct sound waves through fluid