What does the SMA primarily supply?

The superior mesenteric artery (SMA) plays a crucial role in supplying blood to parts of the gastrointestinal tract. Specifically, it primarily supplies the small intestine and the proximal portion of the large intestine, which includes the cecum, ascending colon, and part of the transverse colon. This supply is vital for the proper functioning and nutrient absorption processes that take place in these areas.

Understanding the anatomy and branches of the SMA highlights its importance in the vascular system of the abdomen. The correct answer reflects the SMA's main vascular territory, illustrating its significance in gastrointestinal health and function. The other options refer to organs and tissues that are primarily supplied by different arteries, showcasing the importance of knowing vascular supply in clinical practice and imaging.