---
title: "Head of Pancreas | Anatomy and Physiology I"
description: "Head of the pancreas: the broad part nestled in the duodenum’s curve, where pancreatic enzymes and hormones help digestion and blood sugar control."
canonical: "https://fiveable.me/anatomy-physiology/key-terms/head-pancreas"
type: "key-term"
subject: "Anatomy and Physiology I"
unit: "Unit 23"
---

# Head of Pancreas | Anatomy and Physiology I

## Definition

The head of the pancreas is the widest part of the pancreas, tucked into the curve of the duodenum. In Anatomy and Physiology I, it matters because it helps deliver digestive secretions into the small intestine.

## What It Is

The head of the pancreas is the enlarged right end of the pancreas that sits inside the C-shaped curve of the duodenum. In Anatomy and Physiology I, you usually meet it as an anatomical landmark tied to digestion, duct flow, and nearby organ relationships.

The pancreas is both an exocrine and endocrine organ, but the head is easiest to picture on the digestive side. Its exocrine cells make enzymes and bicarbonate-rich fluid that travel through small ducts into the main pancreatic duct, then empty into the duodenum. That setup lets the pancreas release its secretions right where partially digested food leaves the stomach.

The head matters because of its location, not just its tissue. Being wrapped by the duodenum means it sits at a busy junction where pancreatic juice, bile, and chyme all meet. If you are tracing the path of digestion, this is one of the first places where the small intestine receives strong chemical help for breaking down carbohydrates, fats, and proteins.

That anatomical position also makes the head clinically and functionally noticeable. A blockage in the pancreatic duct, inflammation of the pancreas, or a mass in the head can interfere with drainage into the duodenum. When that flow is disrupted, digestive enzymes may not reach the small intestine at the right time, and the body can have trouble processing food normally.

The endocrine part of the pancreas is nearby too, although the whole organ makes hormones, not just the head alone. Clusters of pancreatic tissue produce insulin and glucagon, which regulate blood glucose. So when you learn the head of the pancreas, think of it as the part of the organ you can point to on an anatomy diagram, plus the entry point for the pancreas’s digestive output.

A helpful way to picture it is this: the head is the wide section of the pancreas that hugs the duodenum, and the pancreatic duct runs through or near it before opening into the small intestine. That relationship is the real reason the head shows up in digestion diagrams, case studies, and organ ID questions.

## Why It Matters

The head of the pancreas shows up whenever your course connects organ structure to digestive function. It is not just a named region on a diagram, it is the part of the pancreas that sits where pancreatic secretions actually enter the small intestine.

That makes it a good example of anatomy serving physiology. The duodenum receives acid from the stomach, then gets neutralized and supported by pancreatic juice so enzymes can work. If you know where the head sits and where the duct empties, the rest of the digestive sequence makes more sense.

It also helps you connect accessory organs as a system. The pancreas, liver, gallbladder, and duodenum do not work in isolation. Bile and pancreatic enzymes arrive in the same general region, so the head of the pancreas becomes a useful landmark for understanding how fat digestion, protein digestion, and carbohydrate digestion happen in one coordinated area.

In labs, quizzes, and diagram questions, this term often tests whether you can identify the organ’s broad end, the duodenal curve, or the route of pancreatic secretions. If you can place the head correctly, you are usually halfway to explaining why a blockage or inflammation there affects digestion so quickly.

## Connections

### [Pancreas](/anatomy-physiology/key-terms/pancreas)

The head is one region of the pancreas, so you need the whole organ to see the bigger picture. The pancreas has both digestive and hormone-producing functions, and the head is the part most tightly associated with draining secretions into the duodenum. When a diagram labels the organ, the head is the wider end students often identify first.

### Duodenum

The head of the pancreas sits in the curve of the duodenum, so these two structures are paired in many anatomy visuals. The duodenum is the first part of the small intestine, and it is where pancreatic enzymes enter to continue chemical digestion. Their close contact is why problems in one can affect the other.

### Pancreatic Duct

The pancreatic duct is the pathway that carries pancreatic secretions toward the duodenum, and it passes through or near the head of the pancreas. If you trace the duct on a diagram, the head is the landmark that helps you follow where the fluid exits. This is often the detail used in digestive system questions.

### [Amylase](/anatomy-physiology/key-terms/amylase)

Amylase is one of the enzymes released by the pancreas into the small intestine. The head of the pancreas matters because it is part of the region that delivers these enzymes through the duct system. If amylase cannot reach the duodenum, carbohydrate digestion is affected even though the enzyme was made.

## On the AP Exam

A quiz or lab practical may ask you to label the head of the pancreas on a digestive anatomy diagram, especially when the pancreas is shown nestled inside the duodenal curve. You may also see a short answer asking why a duct blockage in the head would disrupt digestion, and the right move is to trace the path from pancreatic secretion to the duodenum. In a case study, if a patient has pain, jaundice, or poor digestion tied to the pancreatic head, you would connect the location to how enzyme flow is altered. The key skill is not memorizing the name alone, but identifying the organ region and explaining what happens when its drainage path is disturbed.

## Key Takeaways

- The head of the pancreas is the broad, right-side portion of the pancreas that sits in the curve of the duodenum.
- Its location matters because pancreatic secretions leave the organ near this region and enter the small intestine through the duct system.
- The head is a structural landmark, while the pancreas as a whole has both digestive and hormone-related functions.
- If the head or pancreatic duct is blocked, digestive enzymes may not reach the duodenum correctly.
- On anatomy questions, the best clue is usually the pancreas wrapped by the duodenum, with the head forming the widened section.

## FAQs

### What is the head of the pancreas in Anatomy and Physiology I?

It is the widest part of the pancreas, located inside the curve of the duodenum. In Anatomy and Physiology I, you learn it as the region where pancreatic secretions are funneled toward the small intestine.

### Where is the head of the pancreas located?

It sits on the right side of the body, tucked into the C-shaped duodenum. That close contact is why it shows up as a landmark in digestive anatomy diagrams.

### Is the head of the pancreas the same as the pancreas?

No, it is only one region of the pancreas. The pancreas includes the head, body, and tail, and each part is described by its location and relationship to nearby organs.

### Why does the head of the pancreas matter for digestion?

Because it is part of the route that lets pancreatic enzymes reach the duodenum. If that pathway is blocked or inflamed, the small intestine does not get the normal digestive secretions it needs.

## Related Study Guides

- [23.6 Accessory Organs in Digestion: The Liver, Pancreas, and Gallbladder ](/anatomy-physiology/unit-23/6-accessory-organs-digestion-liver-pancreas-gallbladder/study-guide/CgJYPpHvj8xQTkLI)

## About This Document

Canonical Fiveable pages are available as Markdown at the same path plus `.md`.

- [llms.txt](https://fiveable.me/llms.txt): index of Fiveable's sections and URL patterns
- [llms-full.txt](https://fiveable.me/llms-full.txt): complete subject and unit listing
- [MCP server](https://fiveable.me/mcp): call Fiveable as tools instead of fetching pages (`https://fiveable.me/api/mcp`)
- [MCP server for AP teachers](https://fiveable.me/mcp/teachers): a teacher's classes, assignments and AP-rubric grading (`https://fiveable.me/api/mcp/teacher`)

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