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Biology > Sense Organs > Flashcards

Sense Organs Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

State the location of the eye

A

The two eyes are located in deep sockets of orbits of the front side of the head

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2
Q

Why is blinking necessary

A

The two movable upper and lower highlights protect the eye from any kind of injury and clean the surface of the iBall by regular blinking

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3
Q

State the location of the tear gland or the lacrimal gland

A

Located at the upper side word portion of the orbit are present that tear or lacrimal glands

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4
Q

What makes up the white portion of the eye

A

SClera makes the white portion of the front eye

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5
Q

State the coloured part of the eye and what covers it

A

The cornea and it is covered by the
Sclera

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6
Q

How and why could excessive use of contact lenses lead to drying of the cornea

A

Cornea drives oxygen by diffusion therefore excessive use of contact lenses is not recommended as it could lead to drying of the cornea

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7
Q

The pigmented circular area seen in the eye

A

Iris

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8
Q

The contraction of which muscles help in the alteration of focal length of the eye lens

A

Ciliary muscles

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9
Q

The most sensitive region of the retina

A

The yellow spot

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10
Q

The innermost layer of the eye

A

Retina

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11
Q

The area where the images formed but not seen by eye

A

The blind spot

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12
Q

region the eye where the rods and the cones

A

Retina

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13
Q

The part of the eye that is responsible for the change in the size of the pupil

A

Iris

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14
Q

Fluid present in the posterior Chamber of the eye

A

Vitreous humour

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15
Q

The defect of the human eye caused due to the uneven surface of the cornea

A

Astigmatism

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16
Q

The type of lens used for correcting myopia

A

Biconcave

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17
Q

A condition during which a person feels difficulty while seeing in dim light

A

Night blindness

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18
Q

Name the photo receptors found in the retina of the eye

A

Rods and cons

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19
Q

The layer of the iBall that forms the transparent cornea

A

Sclera

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20
Q

The ear ossicle is in contact with the oval window of the inner ear

A

Stapes

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21
Q

Name the three ear ossicles of the ear

A

Malleus , incus, stapes

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22
Q

The biological term used collectively for the three small bones present in the middle ear

A

Ear ossicle

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23
Q

Name the part of the ear associated with static balance

A

Utriculus and sacculus

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24
Q

Name the part of the ear associated with hearing

A

Cochlea

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25
Q

Name the part of the ear associated with dynamic balance

A

Semi circular canals

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26
Q

The part of the eye which is responsible for its shape

A

Sclera

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27
Q

The part of the eye that prevent the eyeBall from collapseing

A

Vitreous humour

28
Q

The part of the retina on which the images focus for the clearest vision

A

Yellow spot

29
Q

The ability of e y e adjust its focal length in order to obtain a clear vision of objects are different distance

A

Accommodation of the e y e

30
Q

A defect in the E Y E due to which some part of the object is seen clearly while other same blurred

A

Astigmatism

31
Q

e y e defect due to which two eyes some what converge leading to what is called cross eye

A

Squint

32
Q

The nutritive layer of e y e also prevents the reflection of light

A

Choroid

33
Q

The fluid which conveys the vibration of sound in the cochlea and the semi circular canal

A

Endolymph

34
Q

A technical term for the structure found in the inner e a r

A

Membraneous labyrinth

35
Q

The receptors which help in the sensation of taste

A

Sensory papillae

36
Q

Enability of eye to focus on nearby objects due to the loss of elasticity of lens with age

A

Presbyopia

37
Q

Hypermetropia can be corrected using a

A

Biconvex lens

38
Q

Tympanic chamber is filled with what fluid

A

Perilymph fluid

39
Q

Location of the Iris

A

In the eye behind the cornea

40
Q

Location of the Yellow spot

A

Near the centre of the retina

41
Q

Location of the organ of corti

A

In the cochlea of the ear

42
Q

Location of the pinnae

A

Side of the head

43
Q

Location of the eustachian tube

A

Between the middle ear and the pharynx

44
Q

Location of the semi circular canals

A

In the internal ear

45
Q

State the function of cornea

A

It covers and protects the Iris and allows the entry of light rays into the eye

46
Q

State the function of iris

A

It controls the size and the diameter of the pupil according to the intensity of the illumination

47
Q

State the function of aqueous humour

A

It allows light rays to pass into the eye and prevents the refraction and dispersion and keeps the lens moist

48
Q

State the function of choroid

A

It has many capillaries forms the nutritive layer of the retina and absorbs light rays to avoid reflection

49
Q

State the function of cochlea

A

It is the organ of hearing

50
Q

State the function of visual purple

A

It has a vitamin A derivative that helps the eyes to see in the dim light

51
Q

State the function of conjunctiva

A

It supplies nourishment to the eye and prevents infection it covers the cornea and lines inside of the eyelid

52
Q

State the function of vitreous humour

A

It maintains the shape of the eyeball

53
Q

State the function of suspensary ligaments

A

There fibres that hold the lens in position

54
Q

State the function of ear drum

A

It vibrates according to the sound waves and transmits Dem across the middle ear

55
Q

State the function of ear ossicles

A

Amplifier the vibrations of the ear drum and transmit them to the delicate membrane stretched along the oval window

56
Q

State the function of semi circular canals

A

They are concerned with maintaining the equilibrium and the posture of the

57
Q

State the function of endolymph

A

It transmits vibration to the hair cells of the inner ear to produce acoustic perception

58
Q

State the function of eustachian tube

A

It equalises air pressure on the ear drum from the inside

59
Q

State the function of tears

A

Tears clean the front surface of the eye by removing dust particles and enzyme lysosome present in tears kill the germs

60
Q

Describe cataract

A

It is a condition in which the lens turns Opaque and the vision is cut down even total blindness it can be corrected by surgically removing the lens and replacing with artificial one and also using spectacles with high convex lens

61
Q

Differentiate between vitreous humor and aqueous humour

A

Vitreous humor has high specific gravity aqueous humor has low specific gravity a human is found between the retina and the lens of the posterior eye Aquasure is found between the cornea and the length of the anterior in the eye

62
Q

Difference between short citedness and long sightedness

A

The images fall in front of retina the images fall beyond the retina short sightedness is corrected by using glasses of concave lens long sightedness is corrected by using glasses of convex lens

63
Q

Differentiate between rods and cons

A

Rods contain Rodopsin and cones contain idopsin

64
Q

Differentiate between retina and choroid

A

It is the innermost layer of the iBall is the middle layer of the iBall tunics retina contains neurons, choroid contains blood capillaries

65
Q

Differentiate between cochlear and concha

A

Cochlea is the part of inner ear and conceal is that ear pinna of cartilage
Cochlea is associated with hearing and concha collects the wound waves

Biology (7 decks)

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