👉 Recticulum, also known as a rectum, is an organ of the digestive system that connects the small intestine to the large intestine. It is responsible for absorbing nutrients from food and passing them through the intestines into the lymphatic system. The rectum has three main segments: the sigmoid colon, which starts at the base of the spine, the rectus pectoralis muscle, which extends from the midline of the back, and the rectus abdominis muscle, which runs between