BIOL1003 Lecture Notes - Lecture 14: Pituitary Gland, Brainstem, Grey Matter
9 Aug 2018
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All along the membranes, the channels are closed when there is not movement. Signal centre tells them to open up and sodium flows in: describe the events in terms of the electrical activity in polarisation. Grey matter are the bodies of the cell. White matter are the axons and they are white because they are wrapped with myelin. difference between the charges on the inside and outside. Negative charges are chloride and negatively charged proteins. Polarised (cid:523)means there"s a difference(cid:524) here means there"s a (cid:523)shorthand a- (cid:524) Potential difference somewhere between negative 90 negative. Sodium channel channel that allows sodium to come back in however very efficient and most of the sodium does not get back into the channel Sitting in the membrane there are protein pumps that pump positive charges to the outside cell. Biol lecture 20: central nervous system, brain.
