Senses Amd Nervous System Flashcards by Emily Kinna | Brainscape

Q

Stimulus

A

A stimulus is something that causes a response

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Q

Sensitivity

A

Detecting and responding to a stimulus

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Q

Lens

A

Focuses the light onto retina

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Q

Iris

A

Controls the amount of light entering the eye

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Q

Cornea

A

Allows light through

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Q

Pupil

A

The hole that allows light through

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Q

Ciliary muscle

A

Changes the shape of the lens for focuses

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Q

Retina

A

Contains the sensitive cells

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Q

Optic nerve

A

Carries messages to the brain

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Q

Nervous system

A

Brain spinal cord and all nerves

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Q

Sensory nerve

A

Sends a message to the brain from the sense organ

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Q

Motor nerve

A

Sends a message from the brain to a muscle

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Q

Messages

A

Sent along nerves as pulses of electricity

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Q

The eye contains

A

The cornea, iris, lens, pupil, retina, optic nerve and ciliary muscle

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