Jejunum

🩺 Before you name anything

Alright, take a deep breath. Let's start by looking at the overall architecture at low power. Notice the prominent, tall plicae or villi projecting into the lumen. This is a hallmark of the jejunum. At this stage, don't worry about the details; just focus on the shape and structure. The key feature here is the absence of Brunner's glands and large aggregated Peyer's patches, which helps distinguish it from the duodenum and ileum. Students often make the mistake of diving into high power too quickly, missing the broader picture. So, remember: start wide, then narrow in. Once you identify the tall villi and the relatively thin submucosal lymphoid tissue, you've already secured your first mark. Keep calm and methodical, and you'll do just fine.