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PHARM 204 (Final) > EENT > Flashcards

EENT Flashcards

1
Q

Accessory Structure of Eye

A

Palpebrae
Eyelashes
Lacrimal Apparatus

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2
Q

Palpebrae

A

Eyelids

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3
Q

Conjunctiva

A

Epithelial Lining of Eyelid
- Covers inside lining
- Covers outer lining

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4
Q

Palpebral Conjunctivia

A

Inner Lining of Eyelids

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5
Q

Bulbar Conjunctivia

A

Outer Lining of Eyelids

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6
Q

Pink Eye

A

Inflammation of Conjunctiva
–> Conjunctivitis

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7
Q

Tarsal Plate

A

Supports eyelids

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8
Q

Lacrimal Caruncle

A

Gland

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9
Q

Palpebral Fissure

A

Gap between eyelids

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10
Q

Orbicularis Oculi

A

Closes both eyelids

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11
Q

Levator Palpebral Superioris

A

Raises upper eyelid only

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12
Q

What are Eyelashes associated with?
What does this associated structure do?

A

Tarsal Glands
Secretes sebaceous secretions to keep eyelids from sticking together

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13
Q

Lacrimal Apparatus

A

Lacrimal Glands produce Tears
- Alkaline
- Contains Lysozyme and Antibodies

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14
Q

Layers of Eye

A

Fibrous Layer (Outermost)
Vascular Layer
Inner Layer

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15
Q

Fibrous Layer
- Contains?
- Function

A

Sclera and Cornea
- Transparent and Avascular

  • Provides protection
  • Provides attachment for muscle
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16
Q

Vascular Layer
- Contains
- Function

A

Iris, Ciliary Body, Choroid
- Controls shape of lens
- Regulates the amount of light

Route for blood vessels and lymphatics
- Supplies tissue of eye
- Has drainage site to accomodate for aqueous fluid production

17
Q

Vascular Layer (Ciliary Body)

A

Ciliary Muscles that connect to the lens
- Contracts / Relaxes to change shape of lens

18
Q

Vascular Layer (Iris)

A

Blood Vessels, Pigment, Smooth Muscles
- Two layers of smooth muscle which contract to change diameter of pupil

19
Q

Sphincter Pupillae (Iris)

A

Contraction reduces diameter of pupil

20
Q

Dilator Pupillae (Iris)

A

Contraction enlarges the pupil

21
Q

Vascular Layer (Choroid)

A

Highly Vascularized
- Inner part attaches to outer part of Retina

22
Q

Retina (Pigmented Layer)

A

Outer Layer of Retina
- Light is absorbed here before it passes through the neural layer

23
Q

Retina (Neural Layer)

A

Inner Layer of Retina

24
Q

Retina (Macula)

A

Contains only cones

25
Q

Retina (Fovea Centralis)

A

Center of macula, best colour vision when object is focused on Fovea Centralis

26
Q

Retina (Optic Disc)

A

Where optic nerve exits eye
- No rods/cones here
- If object is focused here = no vision
–> Blind Spot

27
Q

Vitreous Body

A

Posterior Cavity
- Vitreous Chamber

  • Puts pressure on retina, if not enough pressure neural layer of retina detaches from posterior wall
27
Q

Aqueous Humor

A

Anterior Cavity
- Anterior Chamber
- Posterior Chamber

  • Nutrient/Waster Transport
  • Fluid cushion for cornea
28
Q

Layers of the Ear

A

External Ear
Middle Ear
Internal Ear

29
Q

External Ear (Auricle)

A

AKA: Pinna

Directs sound into ear

30
Q

External Ear (External Acoustic Meatus)

A

Tunnel

Small Hairs stop insects
Ceruminous glands produce ear wax

31
Q

External Ear (Tympanic Membrane)

A

Ear Drum

Separates external from middle ear

32
Q

Middle Ear (Tympanic Cavity)

A

Filled with air

33
Q

Middle Ear (Auditory Ossicles)

A

Bones:
- Malleus, Incus, Stapes

34
Q

Middle Ear (Auditory Tubes)

A

Connects tympanic cavity to nasopharynx
- Equalizes air pressure

35
Q

Internal Ear (Bony Labyrinth)

A

Protects the Membranous Labyrinth

36
Q

Internal Ear (Membranous Labyrinth)

A

Inside Bony Labyrinth

Contains:
- Hair Cells
- Supporting Cells
Endolymph

37
Q

Internal Ear (Perilymph)

A

Separates Bony Labyrinth and Membranous Labyrinth

38
Q

Bony Labyrinth Subdivisions

A

Hearing:
Cochlear Duct

Vestibullar Complex Equilibrium:
Semicircular Canals (Rotation)
Utricle (Gravity)
Saccule (Linear Acceleration)

PHARM 204 (Final) (14 decks)

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