Nervous Tissue
• The brain contains two types of cells: neurons and neuroglia
1- Excitable cells called neurons. They transmit nerve impulses
through action potential
2- Non-excitable cells called neuroglia. They do not transmit impulses,
but act as supporting cells for the neurons.
• Neuroglial cells are oligodendrocytes, astrocytes, microglia,
ependymal, Schwann and Satellite cells.
• The oligodendrocytes myelinate the CNS while the Schwann cells
myelinate the PNS
• The brain contains two types of cells: neurons and neuroglia
1- Excitable cells called neurons. They transmit nerve impulses
through action potential
2- Non-excitable cells called neuroglia. They do not transmit impulses,
but act as supporting cells for the neurons.
• Neuroglial cells are oligodendrocytes, astrocytes, microglia,
ependymal, Schwann and Satellite cells.
• The oligodendrocytes myelinate the CNS while the Schwann cells
myelinate the PNS
