Anatomy
Gross Anatomy Of The Small Intestine
Compiled By Muchiri Simon
Edition: 2024/25
, Medical & Nursing | Anatomy I of IV pages
1. What is the length of the small intestine in adults?
Length of small intestine: Approximately 6-7 meters.
2. Describe the divisions of the small intestine.
Divisions: Duodenum, jejunum, and ileum.
3. Explain the anatomy of the duodenum.
Anatomy of duodenum: C-shaped, divided into superior, descending, horizontal, and ascending parts.
4. What are the four parts of the duodenum?
Four parts of duodenum: Superior, descending, horizontal, and ascending.
5. Describe the location and function of the duodenal papilla.
Duodenal papilla: Opening for common bile duct and pancreatic duct, located in the descending part of the
6. What is the significance of the major duodenal papilla?
Significance of major duodenal papilla: Site of entry for bile and pancreatic secretions into duodenum.
7. Explain the anatomy of the jejunum.
Anatomy of jejunum: Middle part of small intestine, thicker wall, larger diameter, prominent circular folds.
8. What are the distinguishing features of the jejunum?
Distinguishing features of jejunum: Thicker wall, larger diameter, prominent circular folds.
9. Describe the anatomy of the ileum.
Anatomy of ileum: Terminal part of small intestine, thinner wall, smaller diameter, fewer circular folds, Peyers
10. What are the distinguishing features of the ileum?
Distinguishing features of ileum: Thinner wall, smaller diameter, fewer circular folds, Peyers patches.
11. Explain the histological structure of the small intestine wall.
Histological structure of small intestine wall: Mucosa, submucosa, muscularis externa, serosa.
12. What are the main layers of the small intestine wall?
Main layers of small intestine wall: Mucosa, submucosa, muscularis externa, serosa.
13. Describe the mucosa layer of the small intestine.
Mucosa layer: Contains epithelium, lamina propria, muscularis mucosae.
14. What are villi, and what is their function?
Villi: Finger-like projections increasing surface area for absorption.
15. Explain the role of microvilli in small intestine absorption.
Role of microvilli: Further increase surface area for nutrient absorption.
16. Describe the structure and function of intestinal glands (crypts of Lieberkühn).
Structure and function of intestinal glands: Contain epithelial cells for secretion and absorption.
Anatomy 2024/25 Edition
Gross Anatomy Of The Small Intestine
Compiled By Muchiri Simon
Edition: 2024/25
, Medical & Nursing | Anatomy I of IV pages
1. What is the length of the small intestine in adults?
Length of small intestine: Approximately 6-7 meters.
2. Describe the divisions of the small intestine.
Divisions: Duodenum, jejunum, and ileum.
3. Explain the anatomy of the duodenum.
Anatomy of duodenum: C-shaped, divided into superior, descending, horizontal, and ascending parts.
4. What are the four parts of the duodenum?
Four parts of duodenum: Superior, descending, horizontal, and ascending.
5. Describe the location and function of the duodenal papilla.
Duodenal papilla: Opening for common bile duct and pancreatic duct, located in the descending part of the
6. What is the significance of the major duodenal papilla?
Significance of major duodenal papilla: Site of entry for bile and pancreatic secretions into duodenum.
7. Explain the anatomy of the jejunum.
Anatomy of jejunum: Middle part of small intestine, thicker wall, larger diameter, prominent circular folds.
8. What are the distinguishing features of the jejunum?
Distinguishing features of jejunum: Thicker wall, larger diameter, prominent circular folds.
9. Describe the anatomy of the ileum.
Anatomy of ileum: Terminal part of small intestine, thinner wall, smaller diameter, fewer circular folds, Peyers
10. What are the distinguishing features of the ileum?
Distinguishing features of ileum: Thinner wall, smaller diameter, fewer circular folds, Peyers patches.
11. Explain the histological structure of the small intestine wall.
Histological structure of small intestine wall: Mucosa, submucosa, muscularis externa, serosa.
12. What are the main layers of the small intestine wall?
Main layers of small intestine wall: Mucosa, submucosa, muscularis externa, serosa.
13. Describe the mucosa layer of the small intestine.
Mucosa layer: Contains epithelium, lamina propria, muscularis mucosae.
14. What are villi, and what is their function?
Villi: Finger-like projections increasing surface area for absorption.
15. Explain the role of microvilli in small intestine absorption.
Role of microvilli: Further increase surface area for nutrient absorption.
16. Describe the structure and function of intestinal glands (crypts of Lieberkühn).
Structure and function of intestinal glands: Contain epithelial cells for secretion and absorption.
Anatomy 2024/25 Edition
