3 Types of Neurons:
1) Motor Neurons: transmit impulses from the CNS to muscles or glands
2) Sensory Neurons: carry impulses from sense receptors to the CNS
3) Relay Neurons: connect sensory and motor neurons
Stimulus -> Sensory Neurons -> Relay Neurons -> Motor Neurons -> Response
2) Sensory Neurons: carry impulses from sense receptors to the CNS
3) Relay Neurons: connect sensory and motor neurons
Stimulus -> Sensory Neurons -> Relay Neurons -> Motor Neurons -> Response
Parts of a Nerve Cell
Axon: long fibre that carries nerve impulses
Nerve: a bundle of axons
Synapse: connection between adjacent neurons
Neurotransmitter: chemical secreted into the gap between neurons at a synapse
Reflex: a rapid automatic response to a stimulus
Myelin Sheath: covering of fatty material that speeds up the passage of nerve impulses
Axon Terminal: structure at end of axon that produces neurotransmitters to transmit the nerve impulse across the synapse
Nerve Impulse: high speed signals that pass along axons of nerve cells
Dendrites: branching filaments that conduct nerve impulses towards the cell
Sense Recepter: sense organs that recieve stimulus from inside of outside the body
Response: the reaction to stimulus by muscles or glands
Cell Body: part of a nerve cell containing the nucleus
Nerve: a bundle of axons
Synapse: connection between adjacent neurons
Neurotransmitter: chemical secreted into the gap between neurons at a synapse
Reflex: a rapid automatic response to a stimulus
Myelin Sheath: covering of fatty material that speeds up the passage of nerve impulses
Axon Terminal: structure at end of axon that produces neurotransmitters to transmit the nerve impulse across the synapse
Nerve Impulse: high speed signals that pass along axons of nerve cells
Dendrites: branching filaments that conduct nerve impulses towards the cell
Sense Recepter: sense organs that recieve stimulus from inside of outside the body
Response: the reaction to stimulus by muscles or glands
Cell Body: part of a nerve cell containing the nucleus