PS101 Lecture Notes - Lecture 4: Axon Terminal, Resting Potential, Ct Scan
Document Summary
The study of the brain and nervous system. Based on the amount of oxygen in the blood. Measures the orientation and integrity of white matter to assess brain injury (i. e concussions) Sensors placed on the scalp measure electrical activity in the brain. Patients are awake and alert during the procedure. Neurons process information by communicating with each other. Specialized cells that carry messages throughout the nervous system. Interneuron: carries information between neurons in the brain and the spinal cord (aka the central nervous system) Afferent: sensory neurons relays information from the sense to the brain and spinal cord. Efferent: motor neurons sends information from the central nervous system to the glands and muscles, enabling the body to move. Astrocytes: creates blood-barrier, influences communication between neurons, and helps heal brain damage. Oligodendroglia: provide myelin to speed up transmission of neurons. Myelin: glia in the brain and spinal cord. Neurons can respond to incoming chemical signals by becoming either depot.
