PS101 Lecture Notes - Limbic System, Antibody, Melatonin
Document Summary
Receives, processes, interprets, and stores incoming sensory info. Sends out messages to muscles, glands, organs. All portions of the nervous system outside the brain and spinal cord. Bridge b/w brain and parts of body below neck. Two subdivisions: messages carried through sensory and motor nerves. Nerves connected to sensory receptors and skeletal muscles. Regulates functioning of blood vessels, glands, and internal organs. The ability/degree to which one mobilizes or conserves varies from person-to-person. Cells that conduct electrochemical signals; basic unit of nervous system. Part electric, part chemical; electrical signal tells cell to release chemical. Cells that support, nurture, and insulate neurons. Modify neural functioning remove debris when neurons die enhance the formation & maintenance of neural connections. Chemicals are located in synapse; neurotransmitters are the chemicals released from synapse. Branch-like fibres that receive info from other neurons and transmit towards cell body. Keeps neuron alive and plays key role in determining whether neuron will fire (emit a signal)