Test 1 - Histology

Question 1

Outer layer of eye
Made of dense CT
Point of attachment for Extraocular muscles

Answer 1

Sclera

Question 2

Layer of the eye that is the transition between the sclera and cornea

Answer 2

Limbus

Question 3

Layer of cornea which consists of transparent and randomly oriented collagen type I fibers.
Protects against trauma and bacteria

Answer 3

Bowman’s layer

Question 4

Layer of cornea
Collagen I and IV
Fibers thin, parallel bundles at various angles. Fibroblasts between layers. High proteoglycans

Answer 4

Stroma

Question 5

Layer of cornea that is the thick basement membrane

Answer 5

Descemet’s membrane

Question 6

Antibacterial enzyme contained within the lacrimal secretion.

Answer 6

Lysozyme

Question 7

The anterior boundary of the photosensitive portion of the retina. Non-photosensitive portion of retina continues anteriorly to cover the ciliary body

Answer 7

Ora serata

Question 8

Extends from the lens to the retina, contains gel-like substance composed of water, hyaluronic acid, and collagen fibers.

Answer 8

Vitreous chamber

Question 9

Entry and exit point for the optic nerve and blood vessels. No photoreceptors

Answer 9

Optic disc

Question 10

Yellow spot on the posterior retina

Answer 10

Macula lutea

Question 11

Found between sclera and retina ((posterior portion of uveal tract))

Answer 11

Choroid

Question 12

The pigmented vascular layer of the eyeball between the retina and the sclera

Answer 12

Choroid

Question 13

Functions of the choroid?

Answer 13

Accomodation (change size of pupil)

Production of aqueous humor

Question 14

Continuation of the ciliary body in front of the lens

Answer 14

Iris

Question 15

Watery secretion formed by the epithelium of the ciliary process that supplies the cornea and lens w oxygen and nutrients

Answer 15

Aqueous humor

Question 16

Sharpest vision is at the ?

Answer 16

Fovea

Question 17

Blind spot in the retina?

Answer 17

Optic disc

Question 18

Fibrous connective tissue joints in the skull

Answer 18

Sutures

Question 19

The vestibular apparatus consists of ?

Answer 19

Utricle

Saccule

Semicircular canals

Question 20

Glands that produce earwax?

Answer 20

Ceruminous glands

Earwax = cerumen

Question 21

Auditory ossicles

Answer 21

Malleus, incus, stapes

Question 22

The stapes amplifies sound by?

Answer 22

Putting pressure on the oval window

Question 23

The middle ear is lined with what type of cells?

Answer 23

Columnar to pseudostratified ciliated epithelium w/ mucous glands

Question 24

Part of ear that maintains the pressure balance between tympanic cavity and external environment

Answer 24

Middle ear

Question 25

Organ of corti is part of the inner ear that is located in the ? And is responsible for ?

Answer 25

Cochlea. Auditory sense

Question 26

Central portion of cochlea which contains the spiral ganglion?

Answer 26

Modiolus

Question 27

Bipolar neurons in the spiral ganglion make contact with hair cells where? In order to transmit sound information

Answer 27

Basilar membrane

Question 28

Movement of the __ deflects stereocilia which transmits information about position and movement

Answer 28

Cupula (of gelatinous material)

Question 29

Transition between sclera and cornea

Answer 29

Limbus

Question 30

Layer of corneum that functions to retain tears

Answer 30

Corneal epithelial

Question 31

Found between retina and sclera. | Contains melanocytes

Answer 31

Choroid

Question 32

Projection of choroid and retina Functions to produce aqueous humor and for accomodation

Answer 32

Ciliary body and processes

Question 33

Continuation of ciliary body in front of lens

Answer 33

Iris

Question 34

Bathes the nonvascular cornea and lens and supplies them w nutrients and oxygen

Answer 34

Aqueous humor

Question 35

Controls the amount of light entering the eye. Continuation of the ciliary body. Anterior surface has no epithelial. Posterior surface has pigmented cells

Answer 35

Iris

Question 36

Focuses light on the retina. | Avascular.

Answer 36

Lens

Question 37

The non-photosensitive portion of retina

Answer 37

Ora serata

Question 38

Sharpest vision is at ?

Answer 38

Fovea, in macula

Question 39

Membrane that is synthesized by the pigmented epithelial cells and attaches the retina to the choroid?

Answer 39

Bruch’s membrane

Question 40

``` Maintains viability of sensory retina. Transports nutrients to outer portion of sensory retina. Removes waste products Phagocytosis of photoreceptor disks Metabolism of retinol ```

Answer 40

Pigmented epithelial cells

Question 41

Synapses between the photoreceptor cells and the bipolar neurons.

Answer 41

Outer plexiform layer

Question 42

Synapse between bipolar neurons and ganglion cells

Answer 42

Inner plexiform layer

Question 43

Nuclei of rods and cones are located ?

Answer 43

In the outer nuclear layer

Question 44

Supporting glial cells

Answer 44

Muller cells

Question 45

Connects the ear to the nasopharynx. Maintains pressure balance between tympanic cavity and external environment.

Answer 45

Eustahian tube

Question 46

Air-filled. AKA tympanic cavity. Vibration from here are carried thru this section by the bony ossicles

Answer 46

Middle ear

Question 47

Central portion of cochlea which contains spiral ganglion

Answer 47

Modiolus

Question 48

Structures w perilymph?

Answer 48

Scala vestibuli and scala tympani

Question 49

Organ of corti has 1 inner hair and ___ Outer hairs?

Answer 49

3

Question 50

Macula are the vestibular structures located in the

Answer 50

Utricle and saccula

Question 51

Crista ampullaris is the vestibular structure located in the

Answer 51

Ampullae of the semicircular canals

Question 52

This structure is a ridge in the ampulla of the semicircular canals. Has hair cells for sensory (stereocilia, single kinocilium) Covered by cupula of gelatinous material. Movement of cupula deflects stereocilia which transmits info about position and movement

Answer 52

Crista ampullaris

Question 53

Hair cells covered by otolithic membrane(gelatinous matrix covered w otoliths) Stereocilia that move in response to movement of otolithic membrane and endolymph

Answer 53

Macula of saccule and utricle