Motor Neurons
- Created by: Sophia Dowden
- Created on: 10-06-16 21:12
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- Motor neurons
- Functions
- Dendrites
- Receive stimuli and convert it into electrical impulses
- Cell body
- Contains nucleus, mitochondria, ribosomes and endoplasmic reticulum.
- Nucleus
- Conrols activities of the cell
- Axon
- Nerve impulses travel along it
- Myelin sheath (schwann cell)
- Electrical insulator
- Schwann Cells
- Myelin sheath is a membrane from this cell - it develops in embryos and wraps around axon.
- Nodes of Ranvier
- Gaps between the myelin sheath and where nerve impulses are generated
- Axon endings
- axon terminates in a number of dendrites which have contact with effectors e.g. muscles/glands
- Dendrites
- There are three types of neurons
- Motor
- Sensory
- Connector
- Function of myelin
- Electrically insulates axon
- Allows impulses to jump from node to node
- Speeds up the transmission of action potential
- Functions
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