Special Senses

Question 1

Carry information from the eyes to the brain

Answer 1

Optic tracts

Question 2

An eye is about ________ in diameter, spherical in shape

Answer 2

1 inch

Question 3

Only ________ of the eye’s surface is normally seen, the rest is enclosed and protected by a cushion of fat and the walls of the bony orbit

Answer 3

1/6

Question 4

Accessories of the eyes are:

Answer 4

1. Extrinsic eye muscles
2. Eyelids
3. Conjunctiva
4. Lacrimal apparatus

Question 5

Eyes are protected by the ________

Answer 5

Eyelids

Question 6

It is where the eyelids meet medially and laterally

Answer 6

Medial commissure and Lateral commissure

Question 7

Space between the eyelids in an open eye

Answer 7

Palpebral fissure

Question 8

Projecting from the border of each eyelid are the ________

Answer 8

Eyelashes

Question 9

Houses modified sebaceous and sweat glands

Answer 9

Lacrimal Caruncle

Question 10

Glands that produce an oily secretion to lubricate the eye and restrain tears from flowing over the margin

Answer 10

Tarsal glands

Question 11

Modified sweat glands, lie between the eyelash and their ducts open at the eyelash follicle

Answer 11

Ciliary glands

Question 12

What is cilium?

Answer 12

Eyelash

Question 13

________ sweat glands that open to the eyelash follicles

Answer 13

Apocrine

Question 14

Lines the eyelids, covers the outer surface of the eyeballs

Answer 14

Conjunctiva

Question 15

Inner surface of the eyelids

Answer 15

Palpebral Conjunctiva

Question 16

• Covers the anterior white surface of the eye
• Connects with the cornea by fusing with the corneal epithelium
• Secretes mucus to lubricate the eye and keep it moist

Answer 16

Bulbar Conjunctiva

Question 17

White part of the eye

Answer 17

Sclera

Question 18

Inflammation of the conjunctiva which results in reddened, irritated eyes

Answer 18

Conjunctivitis

Question 19

Infectious form of conjunctivitis which is caused by bacteria or viruses, is highly contagious

Answer 19

Pinkeye

Question 20

Lacrimal apparatus consists of the lacrimal gland and a number of ducts that ________ into the ________

Answer 20

Drain lacrimal secretions, nasal cavity

Question 21

Lacrimal glands produces ________

Answer 21

Lacrimal fluid

Question 21

Lacrimal glands are found on the ________

Answer 21

Lateral end of each eye

Question 22

The tears flush across the eyeball into the ________ medially, then into the ________, and finally into the ________

Answer 22

Lacrimal canaliculi, lacrimal sac, nasolacrimal duct

Question 23

Tears contain ________, ________, ________, and ________

Answer 23

1. Dilute salt solution
2. Mucus
3. Antibodies
4. Lysozyme

Question 24

Cleanse and protect the eye surface as they moisten and lubricate it

Answer 24

Tears

Question 25

Lacrimal secretion ________ substantially, tears spill over the eyelids and fill the nasal cavities, causing congestion and the “sniffles.”

Answer 25

Increases

Question 26

How many extrinsic eye muscles are there?

Answer 26

6

Question 27

These extrinsic eye muscles produce ________ and make it possible for the eyes to ________

Answer 27

Gross eye movements, follow a moving object

Question 28

Three layers or tunics that form the wall of the eyeball

Answer 28

1. Fibrous layer
2. Vascular layer
3. Sensory

Question 29

Fibrous layer consists of:

Answer 29

1. Protective sclera
2. Transparent cornea

Question 30

Light enters the eye through the ________

Answer 30

Cornea

Question 31

Cornea is ________ and ________, but can repair itself easily

Answer 31

Exposed, prone to damage

Question 32

It is the only human tissue that can be _______ without the fear of rejection because it has ________

Answer 32

Transplanted, no blood vessels

Question 33

Three distinguishable regions of the Vascular layer

Answer 33

1. Choroid
2. Ciliary body
3. Iris