Answer:
Small intestine
Explanation:
Around eighty percent of usable nutrients are absorbed in the small intestine.
The main area of gastrointestinal tract responsible for absorption is small intestine. It consists of three sections, i.e. the duodenum, jejunum and ileum. In duodenum, jejunum majority of nutrients are absorbed.
The duodenum absorbs carbohydrates, proteins, and starches that are in the form of glucose or proteins are absorbed in the jejunum.
Answer:
The ventricles are the lower chambers of the heart. There are various grooves in the epicardium; these are the sulcuses. The anterior interventricular sulcus is located on the ventral side of the heart and separates the right and left ventricles.