Sensory Mechanism (8.10) Part 2 Flashcards Preview

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Flashcards in Sensory Mechanism (8.10) Part 2 Deck (34)
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1
Q

The eyes are a collection of _______receptors.

A

photo

2
Q

Type of light detecting structure seen in Cnidarians and Bi-valves

A

Oscilli

3
Q

Type of light detecting structure seen in Platyhelminthes.

A

Eye Cup

4
Q

Eyes with a ______ as seen in most other animals.

A

lens

5
Q

Found in invertebrates, such as insects.

A

compound eyes

6
Q

A compound eyes is many _______ working together. (Produces multiple pictures of the same object.)

A

ommatidia

7
Q

This type of eye is great for detecting movement.

A

compound eye

8
Q

Found in mollusks and vertebrates. (These are good for detecting definition.)

A

Single Eye

9
Q

This is referred to as the eye white.

A

Sclera

10
Q

This layer contains the blood vessels and black pigment for reducing sun light glare.

A

Choroid

11
Q

This layer is involved with mucous production to keep the eye cells moist.

A

conjunctiva

12
Q

inflammation of the conjunctiva

A

Conjunctivitis

13
Q

this layer is the clear part of the sclera. (It also acts as a fixed lens.) (Prevents debris from entering.)

A

Cornea

14
Q

This is the “colored” choroid (It controls the amount of light entering the eye through the pupil.)

A

iris

15
Q

The cornea is operated by _______ muscle automatically for you. (Autonomic nervous system.)

A

smooth

16
Q

This layer of the eye is the site of the photoreceptors.(It appears yellow upon dissection.)

A

Retina

17
Q

This receptor cells are for seeing black, white, and shades of grey. They are the most abundant in all animals having these structures. They possess Rhodopsin Pigment.

A

rods

18
Q

These receptor cells are used for seeing color. They are outnumbered 20:1 by the rods. They are found in vertebrates: but not all.

A

Cones

19
Q

red, blue, green

A

Photopsin Pigments

20
Q

This structure focuses light. (It is made of a transparent, stretchable protein called crystalline.)

A

Lens

21
Q

This is the “focusing” of the eye for near vs. distant vision… This requires it to stretch.

A

Accommodation

22
Q

This term refers to a misshaped lens.

A

Stigmatism

23
Q

(A.K.A. nearsighted) (You can’t see far away objects clearly.)

A

Myopia

24
Q

(A.K.A. farsighted) (You can’t see close up objects clearly.)

A

Hyperopia

25
Q

Term refers to lens degeneration associated with old age.

A

Presbyopia

26
Q

This term refers to a “cloudy lens”.

A

Cataract

27
Q

Condition of having too much vitreous humor; results in too much pressure in the eye.

A

Glaucoma

28
Q

These are the muscles that stretch the lens.

A

Ciliary Body

29
Q

This is the fluid in the front of the eye. (It is mostly water… “aqueous”; humor means “fluid”.)

A

Aqueous Humor

30
Q

This is the fluid in the back of the eye (It is jelly-like… “vitreous”) (It gives the eye its shape.)

A

Vitreous Humor

31
Q

There is one for each eye. (It takes the action potential to the brain.)

A

Optic Nerve

32
Q

Collects rights and lefts in to one side of brain. (Located in the base of the brain.)

A

Optic Chiasm

33
Q

These groups of neurons make the right or left “side” picture.

A

Lateral Geniculate Nuclei

34
Q

The site of integration of “halves” into 1 picture.

A

Primary Visual Cortex of the Occipital lobe of cerebrum