Intro to Cells of the Nervous System
Summary
This content delves into the intricate structure and functions of neurons and glial cells, which are pivotal to understanding the nervous system's operational framework.
- Introduction to neuron structure, highlighting the soma, dendrites, axon, axon hillock, synaptic buttons, Schwann cells, and nodes of Ranvier.
- Explanation of action potential propagation and the role of myelin in speeding up neural impulses.
- Distinction between the peripheral nervous system (PNS) and central nervous system (CNS) myelin sheath cells: Schwann cells in the PNS and oligodendrocytes in the CNS.
- Overview of six major categories of glial cells, their functions, and differences between those in the CNS and PNS.
- Discussion on astrocytes and satellite cells' roles in nourishment, structure, and ion balance, alongside microglia's immune function.
Chapters
00:00
Neuron Structure and Function
02:31
Myelin and Speed of Impulse
04:16
Glial Cells: Support and Protection
06:14
Astrocytes and Satellite Cells
08:18
Microglia and Immune Function
