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Biology > 2 - Cells and Control - Brain, Spine, Eye > Flashcards

2 - Cells and Control - Brain, Spine, Eye Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

What are the parts of the brain?

A

Cerebrum
Cerebellum
Medulla oblongata

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2
Q

What is the Cerebrum?

A

Divided into cerebral hemispheres
Right side controls muscles on left side & vice versa

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3
Q

What does the Cerebellum control?

A

Muscle coordination & balance

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4
Q

What does the Medulla Oblongata control?

A

Unconscious activities like breathing & heart rate

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5
Q

How can CT Scanning investigate brain function?

A

Uses x-rays to produce an image of the brain
Shows the main structures in the brain & can show a diseased or damaged brain

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6
Q

How can PET Scanning investigate brain function?

A

Use radioactive chemicals to show which parts of the brain are active
Used to investigate structure & function in real time

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7
Q

What is the Spinal Cord?

A

A long column of neurones that run from the base of the brain down the spine
Relays information between brain & rest of the body

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8
Q

What is the Cornea?

A

Refracts light into the eye

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9
Q

What is the Lens?

A

Refracts light, focusing it on the retina

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10
Q

What is the Iris?

A

Controls how much light enters the pupil

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11
Q

What is the Retina?

A

Light sensitive part - covered in receptor cells called rods & cones that detect light

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12
Q

What are Rods?

A

More sensitive in dim light - can’t sense colour

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13
Q

What are Cones?

A

Sensitive to colours - not good in dim light

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14
Q

How can cataracts be corrected?

A

Replacing the faulty lens with an artificial one

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15
Q

What is Short Sightedness?

A

Unable to focus on distant objecys

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16
Q

How can Short Sightedness be corrected?

A

Glasses/contact lenses with a concave lens

17
Q

What is Long Sighted?

A

Unable to focus on near objects

18
Q

How can Long Sightedness be corrected?

A

Glasses/contact lenses with a convex lens

19
Q

What is Colour Blindness?

A

Inability to tell the difference between colours
Caused when red/green cones in the retina aren’t working properly

20
Q

What is Cataracts?

A

A cloudy patch on the lens that stops light from entering the eye normally

21
Q

What does the Cerebrum control?

A

Movement, intelligence, memory, language & vision

Biology (23 decks)

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