Liver

Your liver is a busy part of you.

It sits in your belly. It works like a little factory. It helps you grow and stay well. It also helps you use food.

The liver makes a special liquid. This liquid helps break up fat from food. A small pouch holds this liquid. It sits just under the liver.

The liver is very large. It is the heaviest part inside you. It is also the largest gland. It has two main parts.

Your liver helps clean your body. It also stores things you need. It can do many jobs. It does about 500 jobs!

This organ is very important. It keeps your body working well.

The liver is a very busy organ. It acts like a chemical factory for your body.

It performs about 500 different jobs. These jobs help you grow and stay healthy. It also helps you use nutrients from food.

The liver is located in your belly. It sits on the right side, just below your diaphragm. The lower part of your rib cage helps shield it. It is the heaviest organ inside you. It is also the largest gland in the body.

One big job is making bile. Bile is a fluid that helps break up fat from food. A small pouch called the gallbladder stores this bile.

The liver also cleans your blood. It removes things that are not needed.

Tiny parts called hepatocytes make up most of the liver. These cells work in small groups called hepatic lobules.

These lobules are the functional units of the liver. They help the organ do its many tasks. The liver is made of two main parts. We call these the left and right lobes.

The liver is a vital organ found in all vertebrates. It is often called the body's chemical factory. This is because it performs about 500 different jobs. These tasks include making proteins and helping with growth. It also helps the body use nutrients from food. The liver cleans the blood by removing toxins.

To do these jobs, the liver uses special cells. Most of the liver is made of hepatocytes. These cells live in small groups called hepatic lobules. Each lobule is shaped like a hexagon. Inside, blood flows through tiny paths called sinusoids.

The liver also makes bile. This is a fluid that helps break up dietary fat. A small pouch called the gallbladder stores this bile. It later sends the bile to the duodenum to help with digestion.

Doctors use special words to talk about the liver. They often use the prefix "hepat-" from a Greek word. This is why you might hear terms like hepatology or hepatitis. A British doctor named Francis Glisson studied the liver's structure. He is the namesake for Glisson's capsule. This is the fibrous layer that covers the entire organ.

In humans, the liver has a very specific shape. It is dark reddish brown and wedge-shaped. It has two main lobes, a left and a right. When viewed from below, it has four parts. These are the left, right, caudate, and quadrate lobes.

A human liver weighs a certain amount based on a person's size. For men, the standard range is about 1400 to 1600 grams. For women, it is about 1200 to 1400 grams. It is the heaviest internal organ in the body.

You can find your liver in the upper right part of your abdomen. It sits just below the diaphragm. Your lower right ribs help shield it from harm.

The liver connects to two large blood vessels. One is the hepatic artery, which brings oxygen. The other is the portal vein. This vein carries nutrients from the digestive tract to the liver. This way, the liver can process the food you eat.

The liver is a vital metabolic organ found in all vertebrates. It is often described as the body's chemical factory. This nickname exists because the organ performs a massive variety of tasks. Scientists estimate that the liver carries out around 500 different functions. These roles include the detoxification of the organism and the synthesis of proteins. It also produces biochemicals necessary for growth and digestion.

To perform these complex jobs, the liver relies on specialized tissue. Most of this tissue is made of cells called hepatocytes. These cells are the basic metabolic units of the organ. They work within functional units called hepatic lobules. Each lobule is roughly hexagonal in shape. Within these lobules, blood flows through small capillaries known as sinusoids.

The liver receives blood through two distinct major vessels. The hepatic artery carries oxygen-rich blood from the aorta. This blood travels via the celiac trunk to reach the organ. The portal vein carries a different kind of blood. It brings blood rich in digested nutrients from the gastrointestinal tract. This blood also comes from the spleen and the pancreas. Once inside, these vessels subdivide into the tiny sinusoids. These sinusoids lead directly to the hepatic lobules for processing.

Anatomically, the liver has a very specific structure. It is a dark reddish-brown, wedge-shaped organ. It is both the largest gland and the heaviest internal organ in the human body. In humans, the liver is divided into two lobes when viewed from above. These are the right and left lobes, separated by the falciform ligament.

When viewed from below, the liver shows four parts. These include the left, right, caudate, and quadrate lobes. Doctors can also use Cantlie's line to divide the liver into two halves. This imaginary line runs from the vena cava to the gallbladder.

The liver's location is protected within the abdominal cavity. It sits in the right upper quadrant, just below the diaphragm. The lower right rib cage helps shield it from injury.

The organ's surface is covered by a serous coat called the peritoneum. It also has a fibrous capsule known as Glisson's capsule. This capsule is named after the British doctor Francis Glisson. The liver also creates specific impressions on its surface. These impressions accommodate nearby structures like the stomach, kidney, and duodenum.

One of the most important processes is the production of bile. The liver produces this alkaline fluid, which contains bile acids and cholesterol. Bile helps to emulsify and break up dietary fat during digestion. The gallbladder, a small hollow pouch, sits just under the right lobe. It stores and concentrates the bile produced by the liver. The bile is later excreted to the duodenum to assist with digestion.

Medical professionals use the Couinaud classification system to map the organ. This system divides the functional lobes into eight independent segments. Each segment has its own specific vascular inflow and outflow. It also has its own biliary drainage. The segments are numbered I through VIII in a clockwise fashion. Segment I is the caudate lobe, which is unique because it receives blood from both the left and right vascular branches.

Because the liver is so essential, its health is critical for survival. If the liver fails completely, the only option is a liver transplantation. While doctors can use liver dialysis for short-term help, they cannot yet replace the organ long-term. This is because no artificial liver has been developed for permanent use. The liver remains a complex and irreplaceable part of the vertebrate body.