Neurophysiology Flashcards
What is the phospholipid bilayer
Skin of cells
What is neurophysiology?
The physiology of how neurons produce action potentials
What is the resting membrane potential
Electrochemical gradient
What are cations?
Positively charged ions that are sodium, potassium and calcium
What are anions
Negative ions- chloride
Where does the electrochemical gradient occur?
Between the intracellular fluid ICF and the extracellular fluid ecf
What is the charge of the proteins in a neuron cell?
Negative- they can’t get out
What ions sit in the inside of the neuron cell?
Chloride and it is negative
What are the types of channels that are always open
Potassium
With an electrical gradient, if you have a positive ion where will it want to move to?
To the negative area
What does the concentration gradient depend on?
How many ions there are
What happens in a concentration gradient?
Ions like to move from the high concentration areas to the low concentration areas
What does potassium do when a membrane is at rest according to the electrical gradient
Flow from the outside to the inside because the area is negative and potassium is positive
What will potassium do when the membrane is at rest according to the concentration gradient
Flow to the outside of the cell where there is less potassium ions
Why arnt the levels of potassium the same on both the outside and inside of the cell
The sodium potassium pump brings in 2 potassium to remove 3 sodium to make more potassium on the inside than outside
