MGTA02H3 Lecture Notes - Lecture 14: Depolarization, Cytosol, Extracellular Fluid
1
MGTA02H3 Full Course Notes
Verified Note
1 document
Document Summary
Functions of the nervous system: early experiments on nerves and axons were done on the giant axons of squids / worms which were relatively easy to dissect and examine. Slide two functions of the nervous system. Cells sense things in the external or internal environment: e. g. light / movement / blood pressure / temperature / ph levels etc. Once sensed, causes a transmission to be sent into the central nervous system via an afferent (sensory) pathway. Information arrives in central nervous system integrated by interneurons (intermediates between the in / out signals) Transmission of signal out of the central nervous system through an efferent pathway to various organs / glands / muscles so that they elicit an appropriate response. The nervous system that sends things in and out of the brain is called the peripheral nervous system (pns) The spinal cord and the brain encompasses the central nervous system. To cause an effect, there must first be a sensory stimuli.
