PSL201Y1 Lecture Notes - Lecture 2: Inhibitory Postsynaptic Potential, Saltatory Conduction, Reuptake
Document Summary
Consists of the brain and the spinal cord. Receives and processes information from sensory organ and the viscera. To determine state of the external (sensory) and internal (visceral) environment. Integrates information and makes decisions on appropriate actions. Site of learning, memory, emotions, thoughts, language and other complex functions. Consists of neurons that provide communication between the central nervous system and organs throughout the body. Afferent division transmits sensory and visceral information from organs to cns. Includes somatic senses, special senses and visceral information. Neurons of efferent division are called effector organs. Performs functions in response to commands from neurons (=innervation) Somatic nervous system consists of motor neurons which regulate skeletal muscle contractions. Autonomic nervous system consists of neurons that regulate the function of internal organs and other structures that are not under voluntary control. The parasympathetic and sympathetic nervous systems have opposite effects on organs. Comprises an intricate network of neurons in the gastrointestinal tract.
