PSYC 1010 Lecture Notes - Lecture 3: Nervous Tissue, Myocyte, Hypothalamus

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Gerald Goldberg, Miranda Di Lorenzo, Nikoo Norouzian, JongJin Kim, Eden Champagne

Document Summary

Types of cells within the nervous system: handles information, nervous tissue consists of two types of cells, gila. Neurons: most neurons communicate among themselves but a small minority receives signals. Individual cells in the nervous system that receive, integrate, and transmit information from outside. Structure of neuron: specialized receptor area (dendrite, cell body (soma, axon fibre area which impulses are transmitted, terminal buttons which release chemical messengers that carry signals to other neurons. All or none law: principle that the strength by which a nerve or muscle fiber responds to a stimulus is independent of the strength of the stimulus. This is not an all-or-none, but is graded and increases or decreases the. Probability of a neural impulse in the receiving cell. Synaptic transmission eight steps: synthesis, transportation and storage, release, binding, deactivation, auto receptor activation, reuptake, degradation. Neurotransmitters and behaviour: chemicals within the body (hormones) Oxytocin is released when the cells are excited (e. g during sex)