NEURL-UA 100 Lecture Notes - Lecture 3: Phospholipid, Extracellular Fluid, Voltmeter
26 Jan 2017
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Action potential-the nerve impulse that the axons conduct i. ii. iii. iv. Cells able to generate and conduct action potentials are said to have excitable membranes. In the resting neuron the cytosol along the inside has a negative charge, compared to the extracellular fluid due to. Resting membrane potential-the difference in charge across the membrane. Action potential briefly reverses this condition-the inside becomes positively charged. Electrically charged ions in the water are responsible for action and resting potentials. Uneven distribution of electrons causes it to be a polar covalent molecule and causes it to be an excellent solvent of other polar molecules or ions iii. Ions are the major charge carriers in the conduction of electrically in biological systems b. Not perfectly water tight due to permeable pores. Pores are anchored into the membrane by cytoskeleton c. The type and distribution of protein molecules distinguishes neurons from other types of cells.
