It differs from stricture in being applied especially to diffused rather than localized contractions, and in always indicating an origin organic and not spasmodic
Narrowing of a valve or an artery is called stenosis A stenotic valve does not open completely and therefore it obstructs or blocks blood from moving through it normally An artery can become stenotic as well, such that there is obstruction of blood flow through it to the organs of the body
This term means narrowing This may occur particularly in the cervical or lumbar spine producing cervical stenosis or lumbar stenosis If the narrowing is significant, then there is pressure on the spinal cord itself