[Solved] How are the levels of carbon dioxide linked to the photic and aphotic zones? How does this relate to the temperature of the water? Abdominal Surgery: A surgical procedure carried out on organs within the abdomen, including the stomach, liver, gallbladder, and intestines. Blood Tinged Urine: Urine that contains blood, visible to the naked eye or under a microscope, indicating possible underlying medical conditions. Urinalysis: A laboratory test analyzing the content of urine for medical diagnostic purposes. Cyanosis: A bluish or purplish discoloration of the skin and mucous membranes due to insufficient oxygen in the blood.