BIO E121 Lecture Notes - Lecture 26: Neuroglia, Action Potential, Mitosis
Document Summary
Divided into function & structural subdivision structural subdivisions of the. Excitable cells that generate & transmit messages. Several types, each with a specific function. Provide structural support, growth factors, & insulating sheaths around axons. Insulating sheaths; has schwann cells that wraps around axons keeping signal in place. Electrical wire that protects that each single signal does not go elsewhere. Carry information towards the cns from sensory receptors. Carry information away from the cns to an effector muscle or gland. Found in the brain & spinal cord. Account for more than 99% of body"s neurons. Process information in the spinal cord; cns. Shape of a neuron is specialized for communicating with other cells. Carry information to the cell body of a neuron. Carries information away from cell body to either another neuron or an effector. Consists of parallel axons, dendrites, or both from many neurons.
