Nervous system

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Slide 1

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.

Slide 2

nervous system

Slide 3

Slide 4

Basic nerve cell structure

Slide 5

3 main types of nerve cells

sensory neurone

relay neurone

motor neurone

Slide 6

Sensory neurons

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

Slide 7

Relay neuron

Carries impulses from sensory nerves to motor nerves.

Slide 8

Motor 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

Slide 9

Transmission of signals

Slide 10

The Synapse

parkinsons

parkinson