Mri anatomy of hepatobiliary tree

MRI ANATOMY OF BILIARY SYSTEM
MAAJID MOHI UD DIN MALIK
LECTURER COPMS ADESH UNIVERSITY
BATHINDA PUNJAB
MAAJIDMALIKOFFICIAL@GMAIL.COM

The Anatomy of the Biliary System
The biliary system (also called the biliary tract or
biliary tree) is a system of ducts (narrow tubular
structures), organs (including the liver,
gallbladder and pancreas), and associated
structures that function to produce, store,
secrete and transport bile.

BILE
Bile is a greenish brown, thick substance, produced in the
liver and stored in the gallbladder. Bile’s function is to be
released into the small intestine when a fatty meal is
ingested, to help breakdown fats for absorption.
Once food has gone through the initial process of digestion
in the stomach, it moves into the duodenum (the first
segment of the small intestine). Bile and other digestive
secretions travel into the duodenum via the biliary tract
(through the system of bile ducts). These continue the
digestive process by breaking down food so its nutrients can
be absorbed.

DUODENUM
The first of three sections of the small intestine, which
receives food from the stomach and digestive juices
from the liver, gallbladder, and pancreas via the biliary
tract. This is the part of the small intestine that is
primarily involved in breaking down food so that
nutrients can later be absorbed in the jejunum (middle
section of the small intestine).

LIVER
A large glandular organ that performs many vital
metabolic functions, such as the digestion of fats
to make energy in the body. The liver cells
function to make bile.

BILE DUCT
This is a small hollow tube that functions to
transport bile. The biliary system is comprised of
a system of these ducts that flow from the liver to
the gallbladder for storage and finally into the
small intestine (duodenum).

GALLBLADDER
A pear-shaped organ located in front of the
duodenum, just underneath the live, it
functions to store bile. It connects to the
cystic duct.

PANCREAS
A large gland, located behind the stomach, it
secretes pancreatic juice (containing pancreatic
enzymes, such as lipase to break down fats) into
the biliary system via the pancreatic duct.

STRUCTURE
The biliary system is comprised of a series of ducts, organs,
and other structures responsible for producing, storing, and
transporting bile. The bile is made in the cells of the liver and
travels to the gallbladder to be stored for later use.
When a fatty meal is ingested, the bile is released and it
travels to the small intestine (through this system of ducts)
to its final destination, the duodenum.

BILE FLOW THROUGHTHE BILIARY SYSTEM
Through the system of ducts and other structures of the biliary
system, bile travels in a controlled manner, the bile flows:
 From the liver, where bile is made in the liver cells, next it flows into a
system of ducts located inside and outside of the liver, these ducts
function to collect the bile, once collected, the bile travels to the right
and left hepatic ducts.
 From the right and left hepatic ducts, bile then flows into the common
hepatic duct.

CONTINUE
The common hepatic duct joins the cystic duct and the bile
flows from the common hepatic duct into the cystic duct.
The cystic duct is connected to the gallbladder. Bile flows from
the cystic duct into the common bile duct.
The common bile duct (CBD) is located where the common
hepatic duct and the cystic duct join. The CBD runs from the
liver to the duodenum where bile is excreted through a
muscular opening called the sphincter of Oddi.

FUNCTION OF THE BILIARY SYSTEM
There are three important functions of the biliary system, these
include:
Draining the waste products from the liver (into the
duodenum)
Secreting bile in a controlled release manner
Transporting bile and pancreatic juices (to be used to help
breakdown food in the small intestine

MRI BILIARY SYSTEM AXIAL CROSS SECTIONAL ANATOMY

MRI BILIARYSYSTEMCORONALCROSS SECTIONALANATOMY

Mri anatomy of hepatobiliary tree

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