Nervous System By the end of the lesson you should be able to

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Nervous System By the end of the lesson you should be able to
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Nervous System By the end of the lesson you should be able to Describe the basic structure & function of the human nervous system. Describe how the the central nervous system (CNS) & peripheral nervous system (PNS) work together to send information from senses to the CNS and back to muscles by action of the PNS. This Powerpoint is hosted on www.worldofteaching.com Please visit for 1000+ free powerpoints

Neuron – the functional unit

3 main types of nerve cells sensory neuron interneuron motor neuron

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

Interneuron “Relay neuron” Carries impulses from sensory nerves to motor nerves.

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

Nerve Impulse nervous system

Brain components nervous system

Build-A-Brain on your Maniken

Transmission of signals

Reflex arc reflec arc more detail reflex

Reflex arc Sensory neurone Relay neurone Grey matter Motor neurone Receptors in skin cells Relay neurone Grey matter Motor neurone Effector (muscle) reflex arc bbc

The Synapse parkinson parkinsons

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