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GCSE Bio > Nervous system and the eye > Flashcards

Nervous system and the eye Flashcards

1
Q

What is the function of the nervous system?

A

Detect and respond to changes in the enviroment

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2
Q

What organs make up the CNS?

A

The brain and spinal cord

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3
Q

What are reflex arcs and why are they important?

A

Automatic, rapid responses to danger not involving the brain to protect the body from harm.

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4
Q

What is the function of the Vitreous humour?

A

Maintains shape of the eye

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5
Q

Whats the function of the Cornea?

A

Focuses light

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6
Q

What is the function of the Iris?

A

Controls Pupil size

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7
Q

What is the function of the Pupil?

A

Lets light through into the eye

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8
Q

What is the function of the Ciliary muscles and the Suspensory ligaments?

A

Control the shape of the lens

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9
Q

What is the function of the Scelera?

A

Protective outer layer

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10
Q

What is the function of the Lens?

A

Fine focusing of light

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11
Q

What is the function of the Chloroid?

A

Prevents reflection of light

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12
Q

What is the function of the Retina?

A

Detects light and generates impulses

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13
Q

What is the function of the optic nerve?

A

Transmits impulses to the brain

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14
Q

What do dendrites do?

A

Form synapses with other neurones

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15
Q

What is an axon?

A

Transmits impulses long distances

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16
Q

What is the nylien sheath?

A

Speeds up transmission of impulses

GCSE Bio (7 decks)

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