Lab Practical 1

Question 1

Lateral Canthus

Answer 1

where two eyelids connect

Question 2

Medial canthus

Answer 2

where two eyelids connect

Question 3

Conjuctiva

Answer 3

mucous membrane covering the inner surface of the eyelid

Question 4

Palpebral conjuctiva

Answer 4

covers inner surface of eyelids

Question 5

Ocular conjuctiva

Answer 5

covers anterior surface of eye

Question 6

Eyelid

Answer 6

lubricates and protects eye

Question 7

Eyelashes

Answer 7

prevent foreign matter from reaching the surface of the eye

Question 8

Palpebral fissure

Answer 8

gap that separates the free margins of the upper and lower eyelids

Question 9

Fornix

Answer 9

where the palpebral conjuctiva meets with ocular conjuctiva

Question 10

Lacrimal glands

Answer 10

produce tears for lubricant and protection

Question 11

Tear ducts

Answer 11

deliver tears from gland to behind upper eyelid

Question 12

Lacrimal caruncle

Answer 12

contains mucous producing glands

Question 13

Lacrimal puncta

Answer 13

drains the lacrimal lake

Question 14

Lacrimal canaliculi

Answer 14

connects the lacrimal puncta to the lacrimal sac

Question 15

Nasolacrimal sac

Answer 15

connects lacrimal sac to nasal cavity via nasolacrimal canal

Question 16

Iris

Answer 16

Dialation and constriction of pupil and regulates amount of light entering eye

Question 17

Choroid

Answer 17

Contains numerous blood vessels and melanocytes

Question 18

Suspensory ligament

Answer 18

Connects ciliary body to lens

Question 19

Lens

Answer 19

refracts incoming light waves and focuses them onto the retina

Question 20

Macula lutea

Answer 20

Sharpest images are produced when images are focused in this region

Question 21

What is the anterior cavity?

Answer 21

From cornea to lens; contains aqueous humor

Question 22

What is the posterior cavity?

Answer 22

From lens to retina; filled with vitreous humor

Question 23

Eustachian tube

Answer 23

permits equalization of pressures on either side of tympanic membrane

Question 24

Auditory ossicles

Answer 24

Collect and conduct vibrations of tympanic membrane and focus it on to oval window

Question 25

Vestibule

Answer 25

Contains maculae; involved in static equilibrium

Question 26

Semicircular canals

Answer 26

involved in dynamic equilibrium

Question 27

Vestibulocochlear nerve

Answer 27

supplies the sensory cells of the labyrinth

Question 28

Membranous labyrinth

Answer 28

houses the receptors for equilibrium and hearing

Question 29

Utricle and saccule

Answer 29

sensation of gravity and linear acceleration