PS101 Chapter Notes - Chapter 4: Peripheral Nervous System, Hypothalamus, Pineal Gland
Document Summary
Collection of neurons and supportive tissue; protected by column of bones (spinal column) All portion of nervous system outside brain and spinal cord; includes sensory and motor nerves. Part of pns; connects to sensory receptors and to skeletal muscles; a. k. a skeletal nervous system. Part of pns; regulates internal organ and glands. Part of autonomic nervous system; mobilizes bodily resources and increases output of energy during emotion and stress. Part of autonomic nervous system; operates during relaxed states and conserves energy. Cell that conducts electrochemical signals; basic unit of nervous system; a. k. a nerve cell. Cells that support, nurture, and insulate neurons, remove debris when neurons die, enhance formation and maintenance of neural connections, and modify neuronal functioning. Neuron"s branches that receive info from other neurons and transmit it toward cell body. Part of neuron that keeps it alive and determines whether or not it"ll fire. Neuron"s extending fibre that conducts impulses away from cell body and transmits them to other neurons.
