Nervous system

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Nervous System Nervous System By the end of the lesson you should be able to Describe the transmission of impulses from senses to central nervous system and back to muscles. Describe the reflex action and the pathway of the reflex arc. Describe the function of reflex response. Describe the role of the central nervous system.

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Transcript of Nervous system

Page 1: Nervous system

Nervous SystemNervous System

By the end of the lesson you should be able to

Describe the transmission of impulses from senses to central nervous system and back to muscles.

Describe the reflex action and the pathway of the reflex arc.

Describe the function of reflex response. Describe the role of the central nervous

system.

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nervous system

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Basic nerve cell Basic nerve cell structurestructure

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3 main types of nerve 3 main types of nerve cellscells

sensory neurone

relay neurone

motor neurone

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Sensory neuronsSensory neurons

Carries impulses from receptors e.g pain receptors in skin to the CNS( brain or spinal cord)

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Relay neuronRelay neuron

Carries impulses from sensory nerves to motor nerves.

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Motor neuronMotor neuron

Carries impulses from CNS to effector e.g. muscle to bring about movement or gland to bring about secretion of hormone e.g ADH

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Transmission of signals

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The Synapse

parkinsons

parkinson

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