Nucleus, cell body and dendrites. Axon. Myelin sheath separated by node of
Ranvier. Axon terminals.
Neurons enable communications within the NS. Cell body contains genetic
material. Dendrites extend from CB and carry to axon. Axon carries impulses
down the neuron, covered myelin sheath to protect axon. Myelin sheath is
segmented by gaps called node of Ranvier which speed up transmission of the
impulse.
Sensory – carries impulse from the peripheral to the brain.
Relay – allows communication between the sensory and motor neuron
Motor – carries impulse from the brain to the muscles, allowing movement
Ranvier. Axon terminals.
Neurons enable communications within the NS. Cell body contains genetic
material. Dendrites extend from CB and carry to axon. Axon carries impulses
down the neuron, covered myelin sheath to protect axon. Myelin sheath is
segmented by gaps called node of Ranvier which speed up transmission of the
impulse.
Sensory – carries impulse from the peripheral to the brain.
Relay – allows communication between the sensory and motor neuron
Motor – carries impulse from the brain to the muscles, allowing movement
