JAMB - Biology (2005 - No. 15)
From the diagram above the part labelled IV represents the
colon
ileum
caecum
duodenum
Explicació
The duodenum, the first part of the small intestine, plays a crucial role in digestion and nutrient absorption, receiving partially digested food from the stomach and mixing it with bile and pancreatic enzymes to further break down nutrients before absorption begins.