Exam 16: Special Senses: the Eye

Explain the function of the lens.

In the term conjunctivitis,the root conjunctiv means :

The watery fluid that fills both the anterior and posterior chambers of the eye is known as ________.

________ are sensitive to bright light and are used for color vision.

________ is the process of the eyes making adjustments for seeing at various distances.

In the term nyctalopia,the root nyctal means :

The measurement of the acuteness or sharpness of vision is:

There are six eye muscles that control movement of the eye,allowing it to follow a moving object and move precisely.Name these muscles.What are their functions?

The orbit,the muscles of the eye,the eyelids,the conjunctiva,and the lacrimal apparatus make up the external structures of the eye.Give the primary function of each.

The iris is attached to the choroid.

The ________ is the colored membrane attached to the ciliary body.

________ is made possible through the coordinated actions of nerves that control the movement of the eyeball,the amount of light admitted by the pupil,the focusing of the light on the retina by the lens,and the transmission of the resulting sensory impulses to the brain by the optic nerve.

The middle,or vascular,layer of the eyeball is called:

The ________ is a cone-shaped cavity in the front of the skull that contains the eyeball.

The anterior transparent portion of the eye's fibrous outer surface is the sclera.

An agent that causes the pupil to dilate is called:

Measuring the angle of the anterior chamber of the eye is achieved using a/an:

There are two types of macular degeneration.Name both types and describe each.

A vision defect due to age is known as:

In the term keratoconjunctivitis,the combining form kerat/o means :