PSY290H5 Chapter Notes - Chapter 2: Critical Role, Diencephalon, Central Sulcus
Document Summary
Bipolar neurons are especially sensory systems, such as vision common in: unipolar neurons have a single extension, usually thought of as an axon, that branches in two directions after leaving the cell body. One end is the input zone with branches like dendrites, the other, the output zone. Unipolar neurons touch information from the body into the spinal cord transmit. Glial cells protect and assist neurons: there are four basic classes of glial cells, oligodendrocytes and schwann cell both form myelin in the central nervous system and peripheral nervous system respectively. Gray matter mostly receives and processes information: whiter matter is a light-colored layer of tissue, consisting mostly of myelin-sheathed axons, that lies underneath the gray matter of the cortex. The brain is described in terms of both structure and function: one important principle of the vertebrate brain is that each side of the brain controls the opposite side of the body.
