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Flash Cards Biology > Sense organs > Flashcards

Sense organs Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

what is the reflex of the pupil when exposed to light?

A

The pupil of the eye will shrink when exposed to light

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2
Q

What is the function of the cornea?

A

to protecting the eye from outside infiltrates and ultraviolet radiation

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3
Q

Mention of 2 types of light receptor in retina?

A

rod cells and cone cells

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4
Q

What is the function of Cone Cells?

A

Use to see color vision

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5
Q

What is the function of Rod Cells?

A

Gives us a good vision in low light

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6
Q

Cone cells

A

sensitive to bright light

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7
Q

Optic nerve

A

carries impulses to the brain

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8
Q

Vision

A

we can see light by a vision

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9
Q

what is the difference between rod cells and cone cells?

A

rods are responsible for vision at low light levels, cones are responsible for vision at higher light levels

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10
Q

rod cells

A

not able to differentiate colors

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11
Q

Which is the colored part of the eye?

A

iris

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12
Q

The junction of the retina and optic nerve where sensory nerve cells are not found is known as….

A

blind spot

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12
Q

The inner lining at the back of the eye is called…

A

retina

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13
Q

What is the approximate diameter of the human eye?

A

2,3cm

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14
Q

What is bending raya called?

A

refraction

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15
Q

Who refracts the light rays?

A

cornea

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16
Q

Which sense organ is primarily responsible for detecting odors and sending signals to the brain for interpretation?

A

nose

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17
Q

This is a muscle in the mouth that is covered with pink mucosa and tiny buds. It helps in chewing food and sending it down to the throat

A

tongue

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18
Q

What is the largest body organ?

A

skin

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19
Q

How many muscles that human eyes have?

A

6

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20
Q

What is the role of the cornea in the eye?

A

It helps to focus light onto the retina

21
Q

Which part of the eye helps to change the shape for focusing?

A

The lens

22
Q

What’s auditory nerve?

A

carries electrical messages to the brain

23
Q

What is the function of the retina in the eye?

A

It converts light into neural signals for vision

24
Q

name of 3 tiny bones in the inner ear?

A

malleus, incus, stapes

25
Q

What’s sensory receptor?

A

living sensors that obtain information to the spiral cord and brain

26
Q

What’s blindspot point on the retina?

A

where the optic nerve leaves the eye ball

27
Q

What’s colorblind?

A

people who cannot distinguish one or more of the primary colors of light

27
Q

what’s heat receptors?

A

react to temperatures above normal body temperature

28
Q

What’s the function of socket and eyelid?

A

eye is protected from injury from these 2 things

29
Q

What are the five main sense organs in the human body?

A

Eyes (vision), ears (hearing), nose (smell), tongue (taste), skin (touch).

30
Q

Which sense organ is primarily responsible for vision?

A

The eyes.

31
Q

What type of receptors do our noses use to detect smell?

A

Olfactory receptors.

32
Q

How does the ear contribute to both hearing and balance?

A

The ear contains structures (cochlea for hearing and vestibular system for balance) that process sound and maintain equilibrium.

33
Q

What part of the eye adjusts the amount of light that enters?

A

The iris

34
Q

Which sense organ contains taste buds?

A

The Tongue

35
Q

What is the function of the skin as a sense organ?

A

The skin detects touch, temperature, pressure, and pain.

36
Q

What is the role of photoreceptors in the eye?

A

Photoreceptors (rods and cones) convert light into neural signals for vision.

37
Q

How do we perceive sound vibrations through our ears?

A

Sound vibrations cause the eardrum to vibrate, which is transmitted through the ossicles to the cochlea, where hair cells convert them into neural signals.

38
Q

What sense organ is most directly involved in detecting temperature and pressure?

A

The skin

39
Q

Suspensory ligaments

A

A ring that maintaining and supporting the position of the eyeball

40
Q

There are three types of cone cells:

A

-Red-sensing cones
-Green-sensing cones
-Blue-sensing cones

41
Q

Eye problems that can affect cones include:

A

-Color blindness
-Photokeratitis
-Retinitis pigmentosa
-Usher syndrome

42
Q

Focusing on a distant object:

A

-Light rays diverging only slightly
-The thin lens refracts the light rays slightly
-The cornea refracts the light rays

42
Q

Focusing on a nearby object:

A

-Light rays diverging greatly
-The thick lens refracts the light rays greatly
-The cornea refracts the light rays

43
Q

The iris reflex in bright light

A

The circular muscles in the iris contract

43
Q

The iris reflex in dim light

A

The radial muscles in the iris contract

44
Q

How the shape of the lens is changed when it sees a distant object:

A

-The ciliary muscle relaxes
-The suspensory ligaments are pulled tight
-The lens is pulled thin

45
Q

How the shape of the lens is changed when it sees a distant object

A

-The ciliary muscle contracts
-The suspensory ligaments are slackened
-The lens is allowed to bulge

46
Q

Ciliary muscle

A

Change the shape of the lens when your eyes focus on a near object

Flash Cards Biology (3 decks)

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