To remember the right hand rule, write the xyz order twice: xyzxyz. 1  Next, find the pattern youâre looking for: 2  xy => z (x cross y is z) 3  yz => x (y cross z is x; we looped around: y to z to x) 4  zx => y.
Huntington disease is a progressive brain disorder that causes uncontrolled movements, emotional problems, and loss of thinking ability (cognition).Adult-onset Huntington disease, the most common form of this disorder, usually appears in a person's thirties or forties.untington disease is a progressive brain disorder that causes uncontrolled movements, emotional problems, and loss of thinking ability (cognition).
Huntingtonâs Disease: a hereditary disease with progressive brain-cell degeneration, causing spasmodic body movements and progressive dementia. (Oxford) Characterized by the progressive loss of brain and muscle function.Symptoms usually begin during middle age.ay-Sachs Disease: rare inherited disorder that progressively destroys nerve cells (neurons) in the brain and spinal cord. (GHR) A life-threatening disease of the nervous system passed down through families.The disease occurs when the body lacks a protein that helps break down a chemical found in nerve tissue.