PS101 Lecture Notes - Lesion, Neurogenesis, Olfactory Bulb
Document Summary
Central nervous system (cns): receives, processes, interprets, & stores incoming sensory information; sends out messages to muscles, glands, organs. Peripheral nervous system (pns): handles input & output from the cns; all portions of the nervous system outside the brain & spinal cord. Spinal cord is a bridge between the brain and parts of the body below the neck. Neurons: cells that conduct electromagnetic signals, basic unit of the nervous system. Glia: cells that support, nurture, and insulate neurons, remove debris when neurons die, enhance the formation & maintenance of neural connections, and modify neural functioning. Branch-like fibres that receive information from other neurons and transmit towards cell body. Keeps neuron alive and plays key role in determining whether neuron will. Extending fibre that conducts impulse away from cell body and transmit to other cells. May be collected together in bundles called nerves. Many axons are insulated by surrounding layer of fatty called myelin sheath.
