Veterinary Sensory Organs

Front 1

visceral sensations

Back 1

sensations such as hunger and thirst

Front 2

tactile senses

Back 2

touch and pressure

Front 3

proprioception

Back 3

the detection of the position of the feet and body.

Front 4

taste buds

Back 4

a type of chemoreceptor that lines the sides of small raised bumps called papillae.

Front 5

chemoreceptor

Back 5

sensory organ that detects chemical stimuli

Front 6

gustatory sense

Back 6

the sense of taste is reffered to as

Front 7

papillae

Back 7

small raised bumps embedded into the tissue of the tongue and are surrounded by a moatlike trough.`

Front 8

olfactory epithelium

Back 8

lines the nasal cavities.

Front 9

auditory sense

Back 9

hearing

Front 10

external ear

Back 10

funnels sound toward the inner ear and composed of three parts, pinna, external auditory canal, and tympanic membrane (eardrum)

Front 11

Pinna

Back 11

part of the external ear, shaped like a cone composed of auricular cartilage.

Front 12

cerumen

Back 12

ear wax

Front 13

middle ear

Back 13

lined with soft tissue, contains three tiny bones called auditory ossicles.

Front 14

auditory ossicles

Back 14

tiny bones in the middle ear.

Front 15

malleus

Back 15

outermost of the three auditory ossicles in the middle ear and only one that contacts the eardrum.

Front 16

incus (anvil)

Back 16

the bone upon which the malleus hits. it is located in the middle ear.

Front 17

stapes (stirrup)

Back 17

the third bone in the middle ear shaped like a stirrup.

Front 18

vestibular window (oval window)

Back 18

opening in the temporal bone of the skull at the medial side of the middle ear that leads to the inner ear.

Front 19

auditory tube (eustatian tube)

Back 19

keeps the air pressure inside the ear consistent with that outside the body.

Front 20

cocchlear window (round window)

Back 20

another opening in the temporal bone leading to the inner ear.

Front 21

tympanic bulla

Back 21

round normally hollow cavity surrounded by a thin layer of bone.

Front 22

perilymph

Back 22

a liquid inside the inner ear

Front 23

cochlea

Back 23

responsible for detection of sound shaped like a snail,

Front 24

semicircular canals

Back 24

help maintain balance

Front 25

vestibule

Back 25

a hollow oval organ that communicates with the cocchlea rostrally and the semicircular canals caudally. helps maintain balance

Front 26

apex

Back 26

the end of the cochlea

Front 27

cochlear duct

Back 27

along the outer edge of the cochlea, contains a fluid called endolymph

Front 28

endolymph

Back 28

fluid inside the cochlear duct

Front 29

organ of corti

Back 29

consists of supporting epithelial cells.

Front 30

conduction disorders

Back 30

caused by a physical interruption in the transmission of sound to the cochlea. May be caused by obstruction of the external ear canal, infammation of the cochlea, trauma to the tympanic membrane, or damage to the ossicles of the middle ear.

Front 31

Nerve Deafness

Back 31

the result of damage to the cochlea or cochlear nerve, or poor development of the cochlea or cocchlear nerve.

Front 32

cornea

Back 32

transparent layer of tissue that allows light to enter th eye.

Front 33

sclera

Back 33

opaque white part of the eye surrounding the cornea and pupil.

Front 34

limbus

Back 34

junction between the sclera and the cornea.

Front 35

uvea

Back 35

middle layer of the eye that contains large numbers of blood vessels and contains three parts, ciliary body, choroid, and iris.

Front 36

ciliary body

Back 36

encircles the outer edge of the lens and is attached to the lens via the suspensory ligament.

Front 37

choroid

Back 37

contains a highly reflective area called the tapetum that aids in night vision.

Front 38

tapetum

Back 38

highly reflective area that aids in night vision.

Front 39

retina (nervous layer)

Back 39

last and innermost layer of the eye, contains the neurons responsible for detection of light stimuli.

Front 40

optic disk

Back 40

place where axons of the neurons in the retina gather together.

Front 41

optic nerve

Back 41

formed by the optic disk.

Front 42

aqueous chamber

Back 42

small anterior chamber of the eye

Front 43

vitreous chamber

Back 43

larger posterior chamber of the eye.

Front 44

iris (pupil)

Back 44

contains smooth muscle cells and opens and closes to let more or less light in.

Front 45

anterior uveitus

Back 45

infection or inflammation of the anterior chamber of the eye.

Front 46

miosis

Back 46

severe constriction of the pupil.

Front 47

orbit

Back 47

name for the enire eye.

Front 48

conjunctiva

Back 48

a layer of epithelium that secretes mucus and lines both the inner surface of the eye and the cranial surface of the sclera.

Front 49

lacrimal gland

Back 49

secretes tears that moisten the eye

Front 50

nasolacrimal duct

Back 50

a tiny tube where the tears drain into the nasal cavity.

Front 51

lens fibers

Back 51

thin epithelial cells arranged to be transparent.

Front 52

cataracts

Back 52

when the lens fibers are altered to become opaque blocking light from reaching the retina.

Front 53

aqueous fluid

Back 53

water fluid similar to cerebrospinal fluid. supplies nutrients to the corneal cells.

Front 54

canal of schlemm

Back 54

duct located at the angle of the cornea and the iris. reabsorbs aqueous fluid.

Front 55

intraocular pressure

Back 55

constant pressure in the aqueous chamber that helps support the cornea from within.

Front 56

Glaucoma

Back 56

disease of the eye in which the drainage of aqueous humor is obstructed or decreased causing increased intraoccular pressure and pain.

Front 57

vitreous body

Back 57

inside the vitreous chamber that helps support the retina, lens, and cilliary body from within.

Front 58

vitreous humor

Back 58

a mass of gelatinous material.

Front 59

rods (cones)

Back 59

receptor neurons

Front 60

rhodopsin

Back 60

light absorbing pigment

Front 61

iodopsin

Back 61

pigment sensitive to various colors

Front 62

optic nerve fibers

Back 62

axons sent by ganglion cells to form the fibers of the optic nerve.

Front 63

refracts

Back 63

bends

Front 64

optic chiasm

Back 64

a bundle of nerve fibers that lies at the base of the cerebrum just cranial to the hypothalmus and pituitary gland.

Front 65

binocular vision

Back 65

gives humans 3-D vision. helps determine depth and distance.

Front 66

monocular vision

Back 66

animals whose eyes are set on the side of the head have monocular vision.

Front 67

occipital cortex

Back 67

an area of the brain where signals travel.

Front 68

visual cortex

Back 68

an area of visual interpretation inside the occipital cortex.