LB 4-16 Flashcards

1
Q

Curved thick hair that keep sweat out of eyes

A

eyebrows

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2
Q

Hairs that extend from margin of eyelids, prevent objects from contacting eye

A

eyelashes

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3
Q

Function of tears

A

windshield fluid on your eyes

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4
Q

Fluid emitted by the lacrimal gland

A

lacrimal fluid

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5
Q

Path of lacrimal fluid

A

Lacrimal gland > surface of eye > lacrimal sac > nasolacrimal duct

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6
Q

Muscles that cause pupil to constrict

A

circular muscles (sphincter muscles)

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7
Q

Muscles that cause pupil to dilate

A

radiant (dilator) muscles

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8
Q

Disorder characterized by increased pressure in the aqueous humor

A

glaucoma

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9
Q

Olfactory nerve projects into the nasal cavity

A

Olfactory tract widens into olfactory bulb, olfactory nerve branches off and travels through cribiform plate to project into nasal cavity

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10
Q

Specialized receptors for vision; detect light, color and movement

A

Photoreceptors

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11
Q

Sebaceous glands within the eyelid; produce oily substance to prevent eyes from sticking to eyelids

A

Tarsal glands

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12
Q

Space between eyelids; size based on how open eyes are

A

Palpebral fissure

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13
Q

Pink, fleshy tissue in medial corner of eye that produces small amount of oil and sweat; forms grit in medial canthus after sleeping

A

lacrimal carbuncle

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14
Q

Conjunctiva that attaches to eyeball

A

Ocular conjuctiva

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15
Q

Conjunctiva that attaches to eyelid

A

Palpebral conjuctiva

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16
Q

Group of structures that produce, collect and drain lacrimal fluid

A

Lacrimal apparatus

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17
Q

Superior, lateral glands that produces lacrimal fluid

A

Lacrimal gland

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18
Q

Structures that drain lacrimal fluid from lacrimal gland

A

Lacrimal gland ducts

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19
Q

Structures that drain lacrimal fluid from eye into medial lacrimal sac

A

Superior and inferior lacrimal canals

20
Q

Collects lacrimal fluid from eye; superior/lateral to nasal cavity

A

Lacrimal sac

21
Q

Receives fluid from lacrimal sac; drains fluid into nasal cavity

A

Nasolacrimal duct

22
Q

Inflammation and reddening of the conjunctiva “pink eye” due to viral infection, bacterial infections, allergens, chemicals, irritants.

A

Conjuctivitis

23
Q

3 principal layers of the eye

A

Fibrous tunic, vascular tunic and neural tunic.

24
Q

Tough connective tissue layer of the eye

A

Fibrous tunic

25
Q

Blood, immune tissues, interior muscles layer of the eye

A

Vascular tunic

26
Q

Nervous tissue layer of the eye

A

Neural tunic

27
Q

What do the ciliary processes secrete

A

Aqueous humor

28
Q

Location on the retina called the optic disc where ganglion axons form the optic nerve and exit eye toward brain; no photoreceptors present to detect vision.

A

blind spot

29
Q

Outer pigmented and inner neural layers separate due to head trauma; symptoms of flashes of light, decreased vision.

A

Detached retina

30
Q

Deterioration of macula lutes, often due to diabetes, hypertension or eye trauma; diminished color perception, loss of visual clarity in center of visual field.

A

Macular degeneration

31
Q

Small opacities within the lens, usually as a result of aging; difficulty focusing, reduced visual clarity and reduced color intensity

A

Cataracts

32
Q

Increased intraocular pressure due to build up of aqueous humor

A

Glaucoma

33
Q

Part of the ear for hearing

A

Cochlea

34
Q

Part of the ear for equilibrium; detects gravity and acceleration of equilibrium.

A

Vestibule

35
Q

Part of the ear that detects rotation of equilibrium; 3 “rings” called superior, posterior, and lateral canals; ampullae at base of each canal contains receptor cells

A

Semicircular canals

36
Q

Parts of the ear

A

External, middle and inner ear

37
Q

Glands that produce ear wax

A

Ceruminous glands

38
Q

Made up of 3 bones

A

Auditory ossicles

39
Q

Part of ear that attaches to stapes

A

Stapedius muscle

40
Q

Part of ear that attaches to malleus

A

Tensor tympani muscle

41
Q

Part of ear that is the bony exterior chamber of the inner ear

A

Bony labyrinth

42
Q

Part of ear that is the interior fluid filled chamber of the inner ear

A

Membranous labyrinth

43
Q

Fluid that separates the bony and membranous labyrinth

A

Perilymph

44
Q

Central part of the bony labyrinth in the inner ear

A

vestibule

45
Q

Made up of utricle, saccule, semicircular canals and vestibular portion of cranial nerve 8

A

Vestibular complex

46
Q

Houses the organ of Corti, structures for hearing

A

Cochlear duct

47
Q

How is sound transmitted?

A

Basilar membrane