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A&P 151 > Ch 15: Special Senses > Flashcards

Ch 15: Special Senses Flashcards

1
Q

Cranial nerve for smell

A

CN 1

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2
Q

CN for vision

A

CN2

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3
Q

CN for Taste

A

Anterior 2/3: CN 7
Posterior 1/3: CN 9
Root of tongue: 10

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4
Q

CN for hearing and balance

A

CN 8

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5
Q

What does y,B,a stand for

A

Y: gamma
B: beta
a: alpha

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6
Q

What is an (a) part of the gene protein when activated?

A

Alpha

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7
Q

What does camp in the cell cause sodium and calcium channels to do?

A

Open the cells and caused an influx of ions into olfactory, resulting in depolarization and production of action potential 

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8
Q

Where does the information of olfactory neurons go to?

A

OlFactory cortex of frontal lobe

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9
Q

How many types of Papillae are there?

A

4 types

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10
Q

Types of papillae

A

Filiform: NO taste buds
Vallate: taste buds- largest, least numerous
Foliate: taste buds- leaf shaped
Fungiform: taste buds - mushroom shaped

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11
Q

The five types of taste

A

Sour: lateral aspect of tongue
Salty: antriolateral of tongue
Bitter: root of tongue
Sweet: anterior
Umami (glutamate): savory—throughout whole tongue

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12
Q

Influx

A

Moving ion into cell

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13
Q

Sour acid function.

A
  1. Allow influx of hydrogen ions.
  2. Hydrogen ions binding to calcium gated channel.
  3. Allow cat ion to move into Cell to fire action potential.
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14
Q

G-protein usage

A
  • olfaction
  • sweet
  • bitter
  • glutamate
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15
Q

Where are the taste areas located?

A

In the insula

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16
Q

What nerves does not innervate taste buds

A

Hypoglossal nerve

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17
Q

Does the iris determine individual eyecolor?

A

True

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18
Q

Lateral canthus

A

Upper eyelid me to lower eyelid

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19
Q

Palpebral fissure

A

Space between eyelids

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20
Q

Canthi

A

Lateral and medial, eyelids meet

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21
Q

Palpebral conjunctiva

A

Inner surface eyelids

22
Q

Bulbar conjunctiva

A

Interior surface of eye except over pupil
Ex: sclera

23
Q

Lacrimal gland

A

Produces tears

24
Q

Lacrimal canaliculi

A

Has superior and inferior ducks that collect tears

25
Q

Extraocular muscles

A

-physically moves eyeball in all directions
-For recti muscles
-two oblique muscles

26
Q

Intraocular muscles

A

-Control the size of pupil
-Dilator pupillae: dilate
-Sphincter pupillae: decrease pupil
-Changes the shape of lens
-ciliary muscles

27
Q

What does accommodation mean of eye muscles?

A

Changes the shape of lens

28
Q

What does the pupil do?

A

Allows light to enter the eye

29
Q

Fibrous tunics

A

Sclera and cornea

30
Q

Vascular tunics

A

Choroid, ciliary body, iris

31
Q

Nervous tunics

A

Retina

32
Q

Cornea

A

Transparent window, continuous interiorly with sclera.
-Allows light to enter eye and bends in refracts light.

33
Q

Ciliary body

A

Outer ciliary ring, and inner ciliary processes
-Changes the shape of the lens by suspensory ligaments

34
Q

Choroid

A

Associated with sclera, very thin pigmented

35
Q

Anterior chamber

A

Between cornea in Iris, OK, filled with aqueous humor

36
Q

Posterior chamber

A

Between iris and lens, filled with aqueous humor

37
Q

Vitreous chamber

A

Posterior to lens, filled with jelly, like vitreous humor

38
Q

Which chamber is interior to lens?

A

Anterior chamber

39
Q

Which chamber is posterior to lens?

A

Vitreous chamber

40
Q

Relaxed, ciliary muscles

A

Stretch lens in every direction

41
Q

Contracted ciliary muscles

A

Non-stretch lens

42
Q

Cataracts

A

Clouding of the lens

43
Q

Pigmented layer in the retina

A

Council outer pigmented layer

44
Q

Neural layer

A

Inner layer of rod and cone cells, sensitive to light and relayed neurons

45
Q

Is the path of light through retina going in the same direction of action potential?

A

False

46
Q

Cone

A

Perceives color vision
-Red, blue, green

47
Q

Rod

A

Perceives dark and light vision

48
Q

Molecules of Rod

A

Rhodopsin

49
Q

Molecule of cone

A

Iodopsin

50
Q

Macula

A

Small yellow spot

51
Q

Fovea centralis

A

Area of the greatest visual acuity
-Contains most con receptors in the retina

52
Q

Optic disc

A

Blindspot area through blood vessels

A&P 151 (16 decks)

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