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Anatomy And Physiology Semster 2 > Ch. 15 Vocab > Flashcards

Ch. 15 Vocab Flashcards

0
Q

Eye

A

Wall of eye includes fibrous sensory and vascular layers

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1
Q

Special sensory receptors

A

Large complex sensory organs( eyes and ears) or localized clusters of receptors(taste buds and olfactory epithelium)

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2
Q

Accessory structures of the eye

A

Eyebrows, eyelids, conjuctiva, lacrimal apparatus,eccentric eye muscles

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3
Q

Conjunctiva

A
  • mucous membrane
  • lines the internal service of the eyelids and continues over the anterior surface of the eyeball to the outer edge of the cornea where it fuses with the corneal epithelium
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4
Q

Lacrimal apparatus

A

Lacrimal glands-release a dilute salt solution(tears) onto another surface of the eyeball
System of ducts

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5
Q

Lysozyme

A

A substance in tears

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6
Q

Extrinsic eye muscles

A

Lateral rectus;medial rectus; superior rectus;inferior rectus; inferior oblique; superior oblique

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7
Q

Sclera

A

The opaque posterior region of the fibrous layer/the white of the eye

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8
Q

Cornea

A

Transparent anterior 1/6 of fibrous layer

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9
Q

Choroid

A

Posterior portion of the Uvea

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10
Q

Ciliary body

A

Ring of tissue surrounding the lens

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11
Q

Ciliary zonule

A

Suspended ligament that holds lens in position

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12
Q

Iris

A

The colored part of the eye

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13
Q

Pupil

A

central opening that regulates the amount of light entering the eye

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14
Q

Retina

A

Delicate two laye mebrane

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15
Q

Photoreceptors

A

Transducers light energy

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16
Q

Bipolar cells

A

A cell that transmits and processes signals

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17
Q

Ganglion cells

A

Cells that transmit and process signals:

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18
Q

Optic disc(blind spot)

A

Site where the optic nerve leaves the eye

Lacks photoreceptors

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19
Q

Rods

A

Photoreceptors that operate in dim light

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20
Q

Cones

A

Photoreceptors that operate I bright light

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21
Q

Macula lutea

A

Where cones are located

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22
Q

Fovea centralis

A

Where cones are concentrated

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23
Q

Vitreous humor

A

Included in the posterior segment of the internal chambers and fluids

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24
Q

Scleral venous sinus

A

The internal chambers and fluids drains via the scleral venous sinus (canal of Schlemm) at the sclera-cornea junction

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25
Q

Lens

A

Allows precise focusing of light on the retina

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26
Q

Photons

A

Packets of energy

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27
Q

Visible spectrum

A

The light our eyes can see

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28
Q

Reflection

A

The light reflecting

29
Q

Refraction

A

Bending of a light ray due to change in speed when light passes from one transparent medium to another

30
Q

Focal point

A

Where light is focused in our eyes

31
Q

Emmetropic

A

Normal

32
Q

Accommodation

A

changing the lens shape by ciliary muscles to increase refractory power

33
Q

Presbyopia

A

loss of accommodation over age 50

34
Q

Rhodopsin

A

accumulates in the dark and retinal sensitivity increases within 20–30 minutes

35
Q

Light adaptation

A

Occurs when moving from darkness into light

36
Q

Dark adaptation

A

Happen when moving from light to dark

37
Q

Optic chiasma

A

Medial fibers of the optic nerve decussate at the optic chiasma

38
Q

Depth perception

A

Both eyes view the same image from slightly different angles

39
Q

Chemoreceptors

A

Are in taste and smell

40
Q

Olfactory epithelium

A

Part of the nose

41
Q

Taste buds

A

Receptor organs

42
Q

Papillae

A

Taste buds ate on top of these

43
Q

Gustatory taste cells

A

Epithelial cells in the taste buds

44
Q

Umami taste

A

Savory;amino acids glutamate and aspartate

45
Q

Auricle (pinna)

A

Part of the external ear

46
Q

External acoustic meatus

A

Short, curved tube lined with skin bearing hairs, sebaceous glands, and ceruminous glands

47
Q

Tympanic membrane

A

Eardrum

48
Q

Middle ear

A

A small, air-filled, mucosa-lined cavity in the temporal bone

49
Q

Vestibular(oval) window

A

Contained in bony wall of the ear

50
Q

Cochlear round ear

A

Contained in buy wall f the ear

51
Q

Auditory tube

A

Connects the middle ear to the nasopharynx

52
Q

Malleus

A

Hammer,

53
Q

Incus

A

Avil

54
Q

Staples

A

Stirrup

55
Q

Inner ear

A

Bony labyrinth,filled with perilymph

56
Q

Bony labyrinth

A

Torturous channels in the temporal lobe

57
Q

Endolymph

A

In perilymph

58
Q

Vestibule

A

Central egg-shaped cavity of the bony labyrinth

59
Q

Utricle

A

Utricle is continuous with the semicircular canals

60
Q

Semicircular canals

A

Three canals (anterior, lateral, and posterior) that each define two-thirds of a circle

61
Q

Ampulla

A

Ampulla of each canal houses equilibrium receptor region called the crista ampullaris

62
Q

Cochlear

A

A spiral, conical, bony chamber

63
Q

Vestibular membrane

A

Vestibular apparatus consists of the equilibrium receptors in the semicircular canals and vestibule

64
Q

Basilar membrane

A

The basilar membrane, which supports the organ of Corti

65
Q

Lateral rectus

A

Moves eye laterally

66
Q

Medial rectus

A

Moves eye medially

67
Q

Superior rectus

A

Elevates eye and turns it medially

68
Q

Inferior rectus

A

Depresses eye and turns it medially

69
Q

Inferior oblique

A

Elevates eye and turns it laterally

70
Q

Superior oblique

A

Depresses eye and turns it laterally

Anatomy And Physiology Semster 2 (5 decks)

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