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gaps (about 1 micrometre long) that occur between the myelin sheaths generated by consecutive Schwann cells. Because the axon membrane is uninsulated at the nodes of Ranvier, it is capable of generating electrical activity here.
a blood vessel that returns oxygenated blood from the lungs to the left atrium of the heart.
(also called caustic soda) a white solid, available in pellets, flakes or granules, with the...
neurons that have two outgrowths coming directly from the cell body.
the region of the kidney where the renal artery enters, and where the renal vein and the ureter...