a wavelike contraction that propels the contents of tubular organs, for example, the intestine, stomach, and ureters, caudally in animals or in a downward direction in man. Peristalsis is the result of many coordinated contractions of the longitudinal and transverse muscles in the walls of a tubular organ.
Judicial review is important in the US government because it serves as a check on the other branches of government. Judicial review is the power established through the landmark supreme court case Marbury v. Madison. It allows a higher court to review cases with questionable constitutionality. It also allows the supreme court to rule acts of Congress or of the President as unconstitutional and have them removed.
Judicial review is the power of the Supreme Court of the United States to review actions taken by the legislative branch (Congress) and the executive branch (president) and decide whether or not those actions are legal under the Constitution.