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14 Cards in this Set
- Front
- Back
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order of response
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stimulus-receptor-coordinator-effector-response
(SRCER) |
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CNS
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brain, spine
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what neurone brings electrical impulses to the CNS
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sensory neurones
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what neurone brings electrical impulses away from the CNS
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motor neurones
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what is the other nerve
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relay neurone
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what is the function of the retina
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light sensitive layer where light energy is converted to electrical energy
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what is the function of the iris
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coloured ring of tissue
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what is the function of the sclera
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tough outer coat of the eye
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rods and cones
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rods work in dim light, cones work in bright light and detect colour
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what does the eye do in bright light
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circular muscles contract, radial muscles relax and pupils constrict
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what does the eye do in dim light
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circular muscles relax, radial muscles contract and the pupils dilate
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what does the eye do when focusing on a distant thing
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ciliary muscles relax
suspensory ligaments contract lens flattens |
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what does the eye do when focusing on a near thing
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ciliary muscles contract
suspensory ligaments slack lens rounds |
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structure and function of a synapse
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gap to connect nerve cells, a neurotransmitter is secreted across it which starts the impulse on the next nerve cell
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