Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology 1040 > The Senses Key Terms > Flashcards

The Senses Key Terms Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

Ampula

A

Located at the base of each of the three semicircular canals; houses the sensory epithelium, or crista, that contains the hair cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Aqueous Humor

A

the clear fluid filling the space in the front of the eyeball between the lens and the cornea.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Astigmatism

A

blurred vision caused by a misshapen lens or cornea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Auditory Canal

A

collects sound waves and channels them into the ear canal where the sound is amplified

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Basilar membrane

A

the floor of the middle canal or inner ear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Blindspot

A

the small circular area at the back of the retina where the optic nerve enters the eyeball and which is devoid of rods

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Chemical Senses

A

Contains smell and taste

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Chemoreceptor

A

include the sensory receptors in our nose and taste buds, which are attuned to chemicals in the external environment, as well as some receptors that detect chemicals in the body’s internal environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Choroid

A

the pigmented vascular layer of the eyeball between the retina and the sclera.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Cochlea

A

Coiled tube in inner ear that contains organ of corti

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Compound eye

A

The photoreceptor in many invertebrates, mainly insects and crustaceans; consists of up to several thousand light detectors called ommatidia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Cones

A

stimulated by bright light and can distinguish color, but they contribute little to night vision.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Conjunctiva

A

the mucous membrane that covers the front of the eye and lines the inside of the eyelids.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Cornea

A

transparent; lets light into the eye and helps to focus it.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Cupula

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Eardrum

A

A thin sheet of connective tissue that separates the outer ear from the middle ear and vibrates when stimulated by sound waves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Electromagnetic receptor

A

A sensory receptor that detects energy in the form of electricity, magnetism, or various wavelengths of light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Eustachian tube

A

passage from the middle ear to the pharynx (back of the throat), allowing air pressure to stay equal on either side of the eardrum.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Eye cup

A

The simplest type of photoreceptor; cluster of photoreceptor cells shaded by pigmented cells; detects light intensity and direction; found in planarians

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

farsightedness

A

It occurs when the eyeball is shorter than normal, causing the lens to focus images behind the retina; people see distant objects normally but cannot focus on close objects.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Fovea centralis

A

An eyes center of focus where photoreceptor cells are highly concentrated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Hair cells

A

A type of mechanoreceptors that detects sound waves and other forms of movement in fluid or air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Inner ear

A

Includes cochlea, organ or corti, and semicircular canals.

24
Q

Iris

A

Pigmented front part of the choroid

25
Q

Lens

A

Focuses light rays onto the retina

26
Q

Mechanoreceptor

A

A sensory receptor that detects changes in the environment associated with pressure, touch, stretch, motion, or sound

27
Q

Muscle sense

A

our ability to perceive the position and movement of our body segments without the aid of vision.

28
Q

Nearsightedness

A

eyeball is longer than normal so it focuses distant objects in front of the retina instead of on it; cannot focus well on distant objects, although they can see well at short distances.

29
Q

Middle ear

A

Contains three small bones, the hammer, anvil and stirrup; convey vibrations from eardrum to oval window.

30
Q

Organ of corti

A

Hearing organ

31
Q

Otoliths

A

each of three small oval calcareous bodies in the inner ear of vertebrates, involved in sensing gravity and movement.

32
Q

Otolithic membrane

A

A gelatinous membrane overlying the acoustic maculae of SACCULE AND UTRICLE

33
Q

Outer ear

A

consists of the flap-like pinna—the fleshy structure we commonly refer to as our “ear”—and the auditory canal

34
Q

Pain receptor

A

A sensory receptor that detects pain

35
Q

Photopsin

A

Contained in cones; absorbs bright light

36
Q

Photoreceptor

A

A type of electromagnetic sensory receptor that detects the energy of light in the visible or ultraviolet part of the electromagnetic spectrum

37
Q

Physical senses

A

Contains Sight and Sound

38
Q

Pinna

A

the visible portion of the outer ear. It collects sound waves and channels them into the ear canal

39
Q

Pupil

A

the opening in the center of the eye; admits light to the inside

40
Q

Receptor potential

A

The electrical signal produced by sensory transduction

41
Q

Retina

A

consists of many photoreceptor cells and sensory neurons

42
Q

Rhodopsin

A

Contained in the Rods and is derived from vitamin A, which is why vitamin A deficiency can cause “night blindness.”)

43
Q

Rods

A

are extremely sensitive to light and enable us to see in dim light, though only in black, white, and gray

44
Q

Saccule

A

a small membranous sac, paired with the utricle; has an important role in orientation and balance, particularly in vertical tilt

45
Q

Sclera

A

the white outer layer of the eyeball

46
Q

Semicircular canals

A

detect changes in the head’s rate of rotation or angular movement.

47
Q

Sensory adaptaion

A

the tendency of some sensory receptors to become less sensitive when they are stimulated repeatedly

48
Q

Sensory receptor

A

Specialized cell or neuron the detects stimuli from the environment and send information to CNS

49
Q

Sensory transduction

A

the conversion of the stimulus to a receptor potential

50
Q

Somatic sensory system

A

has two major components: a subsystem for the detection of mechanical stimuli (e.g., light touch, vibration, pressure, and cutaneous tension), and for the detection of painful stimuli and temperature.

51
Q

Stretch receptor

A

A type of mechanoreceptor sensitive to changes in muscle length; detects the position of body parts

52
Q

Single lens eye

A

image-forming eye; which is found in some invertebrates and all vertebrates

53
Q

Tapetum lucidum

A

a retroreflector. It reflects visible light back through the retina, increasing the light available to the photoreceptors

54
Q

Thermoreceptor

A

Sensory receptor that detects heat/cold.

55
Q

Utricle

A

important role in orientation and static balance, particularly in horizontal tilt.

56
Q

Visual acuity

A

the ability of your eyes to distinguish fine detail.

57
Q

Vitreous humor

A

the transparent gelatinous tissue filling the eyeball behind the lens.

Biology 1040 (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions