The liver is located in the upper right-hand portion of the abdominal cavity, beneath the diaphragm, and on top of the stomach, right kidney, and intestines. The liver is a vital organ that is responsible for many of the processes that keep us alive. This lesson will discuss the key functions of the. Within the functional segments, the structural unit is the hepatic lobule, a polyhedron surrounded by four to six portal tracts containing hepatic arterial and portal.
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The left and right anatomical lobes are visible when viewing the liver from the front, while the quadrate and caudate lobes are visible when viewed from the underside. These lobes are divided further into smaller structure and function of liver sections, called lobules. These lobules have various functions and contribute to the processes we'll discuss next.
Functions of the Liver The liver has several major functions in the body.
Liver: Definition, Functions & Structure
First, the liver is responsible for producing enzymes and solutions necessary for digestion. This structure and function of liver the production of bile, which helps with the breakdown of fat from our food.
The liver is also responsible for the storage of sugars for energy use. The lining of the upper anus is specialized to detect rectal contents. It lets you know whether the contents are liquid, gas, or solid.
Liver: Anatomy and Functions | Johns Hopkins Medicine Health Library
The anus is surrounded by sphincter muscles that are important in allowing control of stool. The pelvic floor muscle creates an angle between the rectum and the anus that stops stool from coming out when it is not supposed to.
The internal sphincter is always tight, except when stool enters the rectum. It keeps us continent when we are asleep or otherwise unaware of the presence of stool. When we get an urge to go to the bathroom, we rely on our external sphincter to hold the stool until reaching a toilet, where it then structure and function of liver to release the contents.
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Liver: Anatomy and Functions
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- Liver - Wikipedia
- The liver: Structure, function, and disease
- The Structure and Function of the Digestive System
- Functions of the liver
Overview of the Digestive System. More than vital functions have been identified with the liver.
Some of the more well-known functions include the following: Production of bile, which helps carry away structure and function of liver and break down fats in the small intestine during digestion Production of certain proteins for blood structure and function of liver Production of cholesterol and special proteins to help carry fats through the body Conversion of excess glucose into glycogen for storage glycogen can later be converted back to glucose for energy and to balance and make glucose as needed Regulation of blood levels of amino acids, which form the building blocks of proteins Processing of hemoglobin for use of its iron content the liver stores iron Conversion of poisonous ammonia to urea urea is an end product of protein metabolism and is excreted in the urine Clearing the blood of drugs and other poisonous substances Regulating blood clotting Resisting infections by making immune factors and removing bacteria from the bloodstream Clearance of bilirubin, also from red blood cells.
From below, the two additional lobes are located between the right and left lobes, one in front of the other.
What does the liver do?
A line can be imagined running from the left of the vena cava and all the way forward to divide the liver and gallbladder into two halves. An important anatomical landmark, the porta hepatisdivides this left portion into four segments, which can be numbered starting at the caudate lobe as I in an anticlockwise manner.
From this parietal view, seven segments can be seen, because the eighth segment is only visible in the visceral view. The peritoneum folds back on itself to form the falciform ligament and the right and left triangular ligaments. The visceral surface or inferior surface, is uneven and concave.
It is covered in peritoneum apart from where it attaches the gallbladder and the porta hepatis. Underneath the right lobe and to the right of the gallbladder fossa are two impressions, one behind the other and separated by a ridge.
The one in front is a shallow colic impression, formed by the hepatic flexure and the one behind is a deeper renal structure and function of liver accommodating part of the right kidney and part of the suprarenal gland.
It is located close to the right of the fossabetween structure and function of liver bare area and the caudate lobe, and immediately above the renal impression. The greater part of the suprarenal impression is devoid of peritoneum and it lodges the right suprarenal gland.