1 A thick or coarse purÃ©e of fruit or vegetables. 2  The residue of cooked or uncooked fruit or vegetables after sieving or pressing out the juice. citrus pulp is sometimes used in manufactured orange drinks.  noun material produced from recycled paper, rags or ground wood, mixed with water, used for making paper.
Myelin sheath. (Science: anatomy, neurology) An insulating layer surrounding vertebrate peripheral neurons, that dramatically increases the speed of conduction. It is formed by specialised schwann cells, that can wrap around neurons up to 50 times.
The myelin sheath is a covering of the neuron (nerve cell) made by schwann cells wrapping themselves around the neuron down the length of the axon.he main purpose of the myelin sheath is to speed up the conduction velocity of nerve impulses. While there is an electrical charge involved in signals along nerves, it's not the same as a current along a wire. Instead, small channels in the membrane of the neruon open up, and ions flood through.