[Solved] What is the name for the enlarged regions of the subarachnoid space? A)Cisterns B)Subdural space C)Centrum semiovale D)Optic chiasma Sputum Specimen: A sample of mucus coughed up from the lungs, collected for laboratory analysis to help diagnose respiratory diseases. Surgical Incision: A cut made through the skin and tissues during surgery to gain access to the area being operated on. Occult Blood: Refers to the presence of blood in the feces that is not visible to the naked eye, usually detected by chemical tests. Menstrual Cycle: The regular natural change that occurs in the female reproductive system, marking the preparation for potential pregnancy.