👉 Gastraeum is a Greek term that refers to the small intestine, which is one of the four major organs in the human body. It plays a crucial role in the digestion and absorption of nutrients from food, as well as in regulating blood sugar levels. The term "gastro" means "small," and "eum" means "of." Therefore, the term "gastro-eum" refers to both the small intestine and the digestive process within it.