Neurons

• Neurons are nerve cells that process and transmit messages throughout the body.
• Sensory neurons carry messages from the PNS to the CNS.
• Motor neurons connect the CNS to the muscles and glands.
• Relay neurons connect the sensory and motor neurons.
• Sensory neurons have a cell body with two stems on either side, each stem ends in small branches called dendrites.
• Soma:

  The cell body of a neuron, containing the nucleus and cytoplasm.
• Nucleus: contains genetic material and controls cell activities.
• Dendrites: Receive information from other neurons and carry it to the cell body.
• Myelin sheath: To speed up the process of the message moving through the axon
• Node of Ranvier: Makes the signals go faster and jumps from gap
• Axon: The long, thin fibers that carry nerve impulses away from the cell body.
• Terminal button: They communicate with the next neuron