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Structure of neuron
The document describes the main parts of a neuron and their functions. The axon carries nerve impulses away from the cell body, while dendrites carry impulses toward the cell body. Schwann's cells form a protective myelin sheath around axons, and the myelin sheath insulates and speeds up nerve impulses. Synapses allow neurons to transmit electrical signals to other neurons through the release of neurotransmitters.
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Structure of neuron
- 1.
- 3. PART FUNCTION AXON Carry nerve impulses away from cell DENDRITES Carry nerve impulse towards nerve cell SCHWANN’S CELL Protective myelin sheath around the axon of medullated nerve fibers. NUCLEUS Control the activity of cell MYELIN SHEATH -Protection of the nerve fibre. -Insulation of the nerve fibre. -Increases the rate of transmission of nerve impulses. NODES OF RANVIER -Allowing nutrients and waste products to enter/leave the neurone. -Allowing nerve impulses to move along the neurone through a process of de-polarisation and re-polarisation of the nerve membrane. SYNAPSE Reaching a synapse, an impulse causes the release of a neurotransmitter, which diffuses across the gap and triggers an electrical impulse in the next neurone