Table 10.4 Composition and function

Question 1

Tightly arranged protein fibers; transparent

Answer 1

Lens

Question 2

Photo receptor (rods and cones), bipolar neurons, and ganglionic neurons

Answer 2

Retina

Question 3

Tightly packed photo receptors, Neurons, blood vessels, and connective tissue

Answer 3

Internal tunic

Question 4

Pigment cells and smooth muscle fibers

Answer 4

Iris

Question 5

Smooth muscle fibers and glandular epithelium

Answer 5

Ciliary body

Question 6

Vascular layer

Answer 6

Choroid

Question 7

Highly vascular pigmented tissue

Answer 7

Vascular tunic

Question 8

Tightly packed dense connective tissue, transparent and convex

Answer 8

Cornea

Question 9

Tightly bound elastic and collagen fibers

Answer 9

Sclera

Question 10

Avascular connective tissue

Answer 10

Fibrous tunic

Question 11

Gives shape to the eyeball

Answer 11

Fibrous tunic

Question 12

Supports and protects the eyeball

Answer 12

Sclera

Question 13

Transmits and refracts light

Answer 13

Cornea

Question 14

Supplies blood; prevents reflection

Answer 14

Vascular tunic

Question 15

Supplies blood to eyeball

Answer 15

Choroid

Question 16

Supports the lens through suspensory ligament and determines its thickness; secretes aqueous humor

Answer 16

Ciliary body

Question 17

Regulates the diameter of the pupil, and hence the amount of light entering the vitreous chamber

Answer 17

Iris

Question 18

Provides location and support for rods and cones

Answer 18

Internal tunic

Question 19

Photo reception; transmit impulses

Answer 19

Retina

Question 20

Refracts light and focuses on fovea centralis

Answer 20

Lens