Demyelinating disease. A demyelinating disease is any disease of the nervous system in which the myelin sheath of neurons is damaged. This damage impairs the conduction of signals in the affected nerves. In turn, the reduction in conduction ability causes deficiency in sensation, movement, cognition, or other functions depending on which nerves are involved.
For other uses, see Reamer (disambiguation). A reamer is a type of rotary cutting tool used in metalworking. Precision reamers are designed to enlarge the size of a previously formed hole by a small amount but with a high degree of accuracy to leave smooth sides.
BODY - That portion of the reamer extending. from the entering end of the reamer to the. commencement of the shank. SHANK - That portion of the reamer by. which it is held and driven. (i) Straight or parallel shank for machine use. A cylindrically ground shank without square.