👉 Cilium, in medicine, is a type of organ or tissue that secretes digestive enzymes and hormones into the bloodstream. It is also known as the "cavity" of the digestive tract. Cilia are tiny hairs that line the walls of the cilium and help to filter and transport nutrients from the mouth to the stomach and intestines. Ciliums are located in the upper part of the small intestine, where they play a crucial role in the digestive process. They are responsible