ANP 1105 Chapter Notes - Chapter 11: Reuptake, Autoimmune Disease, Exocytosis

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Jacqueline Carnegie

Document Summary

Neurons are closely associated with neuroglia or glial cells that provide a scaffolding that supports the neurons. Astrocytes: most abundant and versatile glial cells; they support and brace the neurons, anchoring them to nutrient supply lines and signal each other through calcium impulses. Microglial cells: very small, they transform into macrophages when neurons are injured and get rid of neural debris. Ependymal cells: are squamous or columnar and line the cavities of the brain where they form a barrier b/w spinal fluid and tissue fluid. They also beat to help circulate spinal fluid. Oligodendrocytes: ling up along thick nerve fibers in the cns and produce an insulating covering (myelin sheath) Satellite cells: surround neuron cell bodies and act similary to the astrocytes in the cns. Schwann cells: surround nerve fibers and form the myelin sheath (like oligodendrites) Neurons are the structural units of the nervous system. Neurons are highly specialized cells that conduct messages in the form of nerve impulses.