Ch.8

Question 0

Blind spot

Answer 0

• The point of entry of the optic nerve on the retina, insensitive to light

Question 1

Accommodation​

Answer 1

• Adaptation on response to differences or changing needs

- Adjustments of the eye for seeing objects at close range

Question 2

Chemoreceptors

Answer 2

-Receptors sensitive to various chemical in solution

Question 3

Choroid

Answer 3

-The pigmented nutritive layer of the eye

Question 4

Ciliary Body

Answer 4

-Part of the eye that connects the iris to the choroid

Question 5

Cochlea

Answer 5

-A cavity of the inner ear resembling a snail shell; houses the hearing receptors.

Question 6

Cornea

Answer 6

-The transparent anterior portion of the eyeball

Question 7

Crista ampullaris

Answer 7

-The sensory organ of rotation located in the semicircular canal of the inner ear.

Question 8

Dynamic equilibrium

Answer 8

-Sense that reports on angular or rotatory movements of the head in space.

Question 9

Iris

Answer 9

-The pigmented, involuntary muscle that acts as the diaphragm of the eye

Question 10

Labyrinth

Answer 10

-Bony cavities and membranes of the inner ear that houses the hearing and equilibrium receptors.

Question 11

Lens

Answer 11

-The elastic, doubly convex structure in the eye that focuses the light entering the eye on the retina.

Question 12

Maculae

Answer 12

-An oval yellowish area; it is the region with the greatest visual activity

Question 13

Mechanoreceptors

Answer 13

-Receptors sensitive to mechanical pressures such as touch, sound, or contractions

Question 14

Olfactory Receptors

Answer 14

• Responsible for the detection of odor molecules.

Question 15

Organ of Corti

Answer 15

-A structure in the cochlea of the inner ear that produces nerve impulses in response to sound vibrations.

Question 16

Ossicles

Answer 16

-The three bones of the middle ear: hammer(malleus), anvil (incus), and stirrup (stapes); also called the auditory ossicles.

Question 17

Photoreceptors

Answer 17

-Specialized receptor cells that respond to light energy

Question 18

Refraction

Answer 18

-Bending; usually refers to light

Question 19

Retina

Answer 19

-Light-sensitive layer of the eye; contains rods and cones

Question 20

Sclera

Answer 20

-The firm white fibrous outer layer of the eyeball; protects and maintains eyeball shape

Question 21

Semicircular canals

Answer 21

• Three fluid-filled bony channels in the ear.

- provide information about orientations the brain to help maintain balance

Question 22

Static equilibrium

Answer 22

-Balance concerned with changes in position of the head

Question 23

Taste buds

Answer 23

-Receptors for taste on the tongue, roof of mouth, and pharynx

Question 24

Tympanic cavity

Answer 24

- major portion of the middle ear, consisting narrow air filled cavity in the temporal bone that contains the bones

Question 25

Vestibule

Answer 25

- A chamber or channel communicating with or opening into another, in particular.