Ap2, Chap 17, Special Senses, Part 2

Front 1

The pigmented portion of the eye which we can see through the transparent corneal surface, contains blood vessels, pigment cells, and two layers of smooth muscle fibers.

Back 1

The Iris

Front 2

area where a visual image arrives after it passes through the cornea and lens. Contains no rods.

Back 2

Macula lutea

Front 3

The highest concentration of cones occurs at the center of the macula lutea. It is the site of sharpest vision.

Back 3

Fovea or Fovea centralis

Front 4

The ___ ____ has no photoreceptors or other structures that are typical of the rest of the retina

Back 4

optic disc

Front 5

Because light striking this area goes unnoticed, the optic disc is commonly called the ___ ____.

Back 5

blind spot

Front 6

Aqueous humor returns to the circulation from the ___ ____.

Back 6

anterior chamber

Front 7

After filtering through a network of connective tissues located near the base of the iris, aqueous humor enters the ___ of ___ or the ______ ______ ______.

Back 7

canal of Schlemm

scleral venous sinus.

Front 8

The _____ Muscle as well as the _____ Ligaments controls the shape of the lens.

Back 8

Ciliary

Suspensory

Front 9

The discs of the outer segment in both rods and cones contain these special organic compounds

Back 9

Visual Pigments

Front 10

Visual pigments are derivatives of the compound ____ , the visual pigment found in rods

Back 10

Rhodopsin

Front 11

Rhodopsin consists of a protein,___, bound to the pigment ___, or retinene, which is synthesized from vitamin __.

Back 11

opsin
retinal
A

Front 12

When all three types of cones are stimulated, or when rods alone are stimulated, you see a ____ light

Back 12

"white"

Front 13

The three types of cones are:

Back 13

blue cones , green cones , and red cones

Front 14

The External Ear includes the fleshy and cartilaginous auricle , or ___ , which surrounds the __ __ __ , or ear canal .

Back 14

pinna

external acoustic canal

Front 15

a passageway that ends at the tympanic membrane,

also called the __ or __

Back 15

The external acoustic canal

tympanum or eardrum

Front 16

Glands along the external acoustic canal. It secretes a waxy material that helps deny access to foreign objects

Back 16

Ceruminous glands

Front 17

Waxy secretion of the ceruminous glands that also reduces the chances of infection.

Back 17

Cerumen

Front 18

Vibration of the tympanic membrane converts arriving sound waves into ___ ___.

Back 18

mechanical movements

Front 19

The senses of ____&___are provided by the receptors of the inner ear.

Back 19

equilibrium and hearing

Front 20

The Basic sensory receptors of the inner ear.

Back 20

Hair cells

Front 21

The anterior , posterior , and lateral semicircular ducts are continuous with the ____.

Back 21

utricle

Front 22

Each semicircular duct contains an _____:
An expanded region that contains the hair cells

Back 22

Ampulla

Front 23

The hair cells of the cochlear duct are located in a structure called the ____ of ____ .

Back 23

organ of Corti

Front 24

A membrane that separates the cochlear duct from the tympanic duct.

Back 24

the basilar membrane

Front 25

1) Sound Waves Arrive at the ____ _____

Back 25

Tympanic Membrane

Front 26

2) Movement of the Tympanic Membrane Causes Displacement of the ___ ___

Back 26

Auditory Ossicles

Front 27

3) Movement of the Stapes at the Oval Window Establishes Pressure Waves in the __ of the ____ ____

Back 27

Perilymph

Vestibular Duct

Front 28

4) The Pressure Waves Distort the ___ ___On Their Way to the Round Window of the _____ ____.

Back 28

Basilar Membrane

Tympanic Duct

Front 29

5) Vibration of the Basilar Membrane Causes Vibration of Hair Cells Against the ____ _____.

Back 29

Tectorial Membrane

Front 30

6) Information About the Region and Intensity of Stimulation Is Relayed to the CNS Over the ___ Branch of the ___ Nerve (VIII).

Back 30

Cochlear

Vestibulocochlear