Nerve Cells
Plan
The Cell
➢ Cells of the Nervous System.
➢ Glial cells.
• Myelinating Cells.
• Support Cells.
Neurons
➢ Basic Structure and Type.
How Neurons Work
➢ The Resting Potential.
➢ The Action Potential.
➢ Propagation.
, Glial Cells
Neuroglia (Nerve glue)
Perform several supporting functions in the nervous system.
- Insulation (Mylenation)
- Protection
- Nutrition and waste removal
- Circulation
Mylenating Cells
Schwann Cells- Peripheral nervous system
- The principal myslenating cells of peripheral nerve fibres
- Mylenate single neuronal axons
- Each Schwann cell covers 1mm of axon
Oligodendrocyte- Central nervous system
- These are the principal myelinating cells of CNS nerve fibres.
- They have several processes, each of which myelinates a section of a
different neuronal axon.
- They provide insulation and 3-D support.
Plan
The Cell
➢ Cells of the Nervous System.
➢ Glial cells.
• Myelinating Cells.
• Support Cells.
Neurons
➢ Basic Structure and Type.
How Neurons Work
➢ The Resting Potential.
➢ The Action Potential.
➢ Propagation.
, Glial Cells
Neuroglia (Nerve glue)
Perform several supporting functions in the nervous system.
- Insulation (Mylenation)
- Protection
- Nutrition and waste removal
- Circulation
Mylenating Cells
Schwann Cells- Peripheral nervous system
- The principal myslenating cells of peripheral nerve fibres
- Mylenate single neuronal axons
- Each Schwann cell covers 1mm of axon
Oligodendrocyte- Central nervous system
- These are the principal myelinating cells of CNS nerve fibres.
- They have several processes, each of which myelinates a section of a
different neuronal axon.
- They provide insulation and 3-D support.
