Biology Flashcards

1
Q

What is the cornea (eye)

A

A clear tough contacting on the front of the eye which refracts (bends) light

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2
Q

What is the iris (eye)

A

The coloured part of the eye, a muscle. It controls how much light enters the pupil.

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3
Q

What is the lens (eye)

A

Flexible structures that change shape to focus light onto the retina

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3
Q

What is the Pupil (eye)

A

Allows light into the eye. Dilates (gets larger) in dim light, constricts (gets smaller) in bright light

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4
Q

What is the retina (eye)

A

Contains millions of nerve cells which set electrical signals when light strikes them, the receptors are called rods and cones

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5
Q

What is the blind spot in your eye? (Eye)

A

A point where nerves are missing the fibres. The retina enters the opticnevere here

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6
Q

What is the optic nerve in the eye? (The eye)

A

It carries impulses from the retina to the brain co-ordinatior

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7
Q

What is a Stimulus (senses)

A

A change in environment

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8
Q

What is a receptor (senses)

A

Many different types senses eg, light,sound, touch

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9
Q

What is an coordinator (senses)

A

Brain or spinal cord

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10
Q

What is an effector (senses)

A

Muscle or gland

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11
Q

What is a Response (senses)

A

An action in reaction to a stimulus

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12
Q

What is humour (eye)

A

Liquid in the eye

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13
Q

What is the nerve in ear? (Ear)

A

Auditory nerve

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13
Q

How many main layers is the skin made up of? (Touch)

A

3

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14
Q

What do receptors in the skin do? (Touch)

A

It has many different receptors that detect pain pressure and temperature

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15
Q

What does the skin contain? (Touch)

A

Sweat glands, hair, hair follicles, erector muscle and blood vessels

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16
Q

Where is the cerembellum located? (Brain)

A

In the bottom back of the brain

17
Q

Where is the medulla located? (Brain)

A

The straight line in the bottom of the brain

17
Q

Where is the cerebrum located? (Brain)

A

The top of the brain

18
Q

What does the brain do? (Brain)

A

Controls the functions of the body and behaviour. Different areas carry out different functions.

19
Q

What does the cerebellum do? (Brain)

A

Controls movement

20
Q

What does the medulla do? (Brain)

A

Controls the unconscious activities such as heart breath and digestion

21
Q

What do3s the cerebral cortex do? (Brain)

A

Controls conscious thoughts eg: thihht intelligence memory and language

22
Hwo are some people long sighted? (Eye)
Eyeball too short or lens too weak
23
How are some people short sighted?
Eyeball is too long or lens too strong.
24
What are receptors in the eye sensitive to? (Eye)
They are sensitive to light
25
What are receptors in the ear sensitive to?
They are sensitive to sounds
26
What are receptors a kind of?
Cells
26
What does the nervous system do?
Allows humans to coordinate their behaviour and enable them to to react the their surrounding
27
Which senses are sensitive to chemicals?
Tongue and nose
28
Where does information from receptors go to?
Information from receptors passes along nerves to the brain.
29
What is another word for ear drum? (Ear)
Tympanic membrane
30
What is the tube in ear called? (Ear)
Eustachian tube
31
What is an independent variable?
The variable you change
32
What is the dependent variable?
The one your measure/ record
33
What is the control variable? (Ear)
The one you keep the same
34
What are the 3 bones in the ear? (Ear)
Hammer anvil and stir up
35
What is the outer ear called? (Ear)
The pinna
36
What is the canal in the ear called? (Ear)
The ear canal
37
Which part of the ear vibrates when sound is made? (Ear)
The ear drum
38
What is the circular part in the back of the ear callled? (Ear)
The cohlea
39
What are the canals in the ear called? (Ear)
The semicircular canals