Support Systems Of Head And Neck (3)

Question 1

What does the fluid from the lacrimal gland do?

Answer 1

Moistens and lubricates the surfaces of the cornea and provides nutrients to the cornea

Question 2

What are the lacrimal glands supplied by?

Answer 2

Parasympathetic nervous system

Sympathetic nervous system

Question 3

What is the cornea highly sensitive to?

Answer 3

Touch

Question 4

What is the cornea innervated by?

Answer 4

Cranial nerve 5 (ophthalmic)

Question 5

What does the sclera provide attachment for?

Answer 5

Extrinsic and intrinsic eye muscles

Question 6

What is the anterior part of the sclera known as?

Answer 6

White of the eye

Question 7

What is the iris?

Answer 7

Thin contractile diaphragm with a central aperture (pupil)

Question 8

What is the pupil?

Answer 8

Central aperture in the iris that allows the transmission of light

Question 9

What 2 muscles work together to control the size of the pupil?

Answer 9

Sphincter and dilator pupillae

Question 10

What is the sphincter pupillae controlled by?

Answer 10

Parasympathetic nervous system

Question 11

How is the sphincter pupillae arranged?

Answer 11

Circularly

Question 12

What does the sphincter pupillae work to do?

Answer 12

Decrease the diameter of the pupil

Question 13

What is the dilator pupillae controlled by?

Answer 13

Sympathetic nervous system

Question 14

How is the dilator pupillae arranged?

Answer 14

Radially

Question 15

How does the dilator pupillae work?

Answer 15

Increase the diameter of the pupil

Question 16

What two parts form the retina?

Answer 16

Optic part and non-visual retina

Question 17

What is the fundus?

Answer 17

Where light entering the eyeball is focused

Question 18

Why is the optic disk considered a blind spot?

Answer 18

Because it contains no photoreceptors and is insensitive to light

Question 19

What is the macula?

Answer 19

Has special photoreceptor cones that is specialized for acuity of vision

Question 20

What is the fovea?

Answer 20

Area of most acute vision

Question 21

What does the ciliary muscle of the lens do?

Answer 21

Changes the shape of the lens

Question 22

What does the levator palpebrae superioris do?

Answer 22

Elevates superior eyelid

Question 23

What are the movements of the superior rectus?

Answer 23

Elevates

Adducts

Medially rotates

Question 24

What are the movements of the inferior rectus?

Answer 24

Depresses

Adducts

Laterally rotates

Question 25

What are the movements of the medial rectus?

Answer 25

Adducts

Question 26

What are the movements of the lateral rectus?

Answer 26

Abducts

Question 27

What are the movements of the inferior obliques?

Answer 27

Abducts

Elevates

Laterally rotates

Question 28

What are the movements of the superior obliques?

Answer 28

Abducts

Depresses

Medially rotates

Question 29

What does the cochlear innervate?

Answer 29

Hair cells of spiral organs

Question 30

What does the vestibular innervate?

Answer 30

Hair cells in the macula

Question 31

What are the auditory ossicles?

Answer 31

Malleus

Incus

Stapes

Question 32

What makes up the fibrous layer of the eye?

Answer 32

Cornea and sclera

Question 33

What makes up the vascular layer of the eye?

Answer 33

Iris

Pupil

Sphincter and dilator pupillae

Question 34

What makes up the inner layer of the eye?

Answer 34

Retina

Fundus

Optic disc

Macula

Fovea

Question 35

What does the tympanic membrane form a partition between?

Answer 35

External acoustic meatus and tympanic cavity of middle ear