8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

1/22

Duodenum, Pancreas and the

Hepatic Portal Vein

Mae Nen Vedeja

Ella Carmela Chavez

Zara Denisse Garcia

Mardred Marcelo

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

2/22

The Small Intestine

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

3/22

Duodenum

The duodenum is a short portion of

the small intestine connecting the rest of the

intestine to the stomach. It begins withthe duodenal bulb, bordered by the pyloric

sphincter that marks the lower end of the

stomach, and is connected by the ligament

of Treitz to the diaphragm before leadinginto the next portion of the small intestine,

the jejunum.

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

4/22

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

5/22

Duodenum

Parts of the Duodenum

Superior Duodenum

Descending Duodenum Inferior Duodenum

Ascending Duodenum

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

6/22

Parts of the Duodenum

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

7/22

Function of the Duodenum

The duodenum serves to neutralize the acidity ofthe chyme . Both the duodenal glands and thepancreatic duct secrete alkaline fluids to temper the

acidity of the chyme. The mucus secreted by the duodenal glands helpsprotect the duodenum from the acidity, makingthe duodenum much less sensitive than the rest ofthe small intestine to the acidic chyme.

The duodenum helps protect the rest of the smallintestine by neutralizing the chyme to someextent before it passes into the jejunum.

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

8/22

Pancreas

Location

The pancreas is an elongated, tapered organlocated across the back of the abdomen, behind

the stomach.

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

9/22

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

10/22

Pancreas

Parts

The right side of the organ (called the head) is the

widest part of the organ and lies in the curve of

the duodenum. The tapered left side extends

slightly upward (called the body) and ends near

the spleen (called the tail).

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

11/22

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

12/22

Pancreas

Tissues of the Pancreas:

exocrine tissueThe exocrine tissue secretes digestive enzymes.

These enzymes are secreted into a network ofducts that join the main pancreatic duct, whichruns the length of the pancreas.

endocrine tissue

The endocrine tissue, which consists of the isletsofLangerhans, secretes hormones into thebloodstream.

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

13/22

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

14/22

Pancreas

Pancreatic Duct

-Wirsung duct (Main pancreatic duct)

-Santorinis duct (Accessory duct)

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

15/22

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

16/22

Blood Supply of the Pancreas

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

17/22

Hepatic Portal Vein

Often called as portal vein.

It is a short vein present in the abdominal

cavity. It is formed by the confluence of thesuperior and the splenic veins.

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

18/22

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

19/22

Hepatic Portal Vein

Functions

Drains deoxygenated, but nutrient rich blood from

different organs to the liver.

Drains blood from the abdominal part of the

gastrointestinal tract, which includes lower third

of esophagus, stomach, all three parts of small

intestine, all parts of the large intestine and upperhalf of the anal canal.

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

20/22

It also drains blood from the accessory organs

of digestive system including spleen, pancreas

and gall bladder.

Hepatic Portal Vein

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

21/22

Tributaries of the Hepatic Portal Vein

Splenic Vein

Superior Mesenteric Vein Inferior Mesenteric Vein

Left Gastric Vein

Right Gastric Vei

Hepatic Portal Vein

8/6/2019 Duodenum, Pancreas, and Hepatic Portal Vein

22/22