Examlex
How does the structure of a lymph node allow lymphocytes and macrophages to perform their protective function?
Myelin
A fatty covering that insulates nerve fibers in the brain, spinal cord, and peripheral nerves, speeding the transmission of nerve impulses.
Action Potential
A rapid rise and subsequent fall in voltage or membrane potential across a cellular membrane, a process allowing neurons to transmit signals.
Membrane Potential
Voltage difference across a cell membrane.
Potassium
Potassium is a chemical element with the symbol K, necessary for the functioning of all living cells and vital for heart, muscle, and nerve functions.
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