PSY 100 Lecture Notes - Lecture 2: Spinal Cord, Endocrine System, Pineal Gland
Document Summary
Body"s communication system: neurons: nervous system- individual communication, hormones: endocrine system- massive communication (email system) Cns: brain and spinal cord (encased in bone) Pns: all nerves and neurons connecting cns to the rest of the body. Two types of cells found in nervous system. Glial cells (surround, supports, and provides nutrition for neurons) 3 facts about neurons: no neurons are exactly alike, most neurons have 3 parts: Dendrites: detect signals from other axons conveys information to cell body. Soma (cell body): contains nucleus (life-sustaining functions); receives info form dendrites. Axon: carries info away from soma to other neurons; one axon per soma, but many branches: neurons are in close contact with other neurons. Must be close for dendrites and axons to be touching and relaying information to each other. How do neurons communicate: within a neuron, communication occurs through ap.
