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The liver is a large, reddish-brown, spongy organ found in the upper right quadrant of the abdomen, below the diaphragm and shielded by the lower right rib cage. It is the largest solid organ in the body, weighing about 1.5 kilograms (3.3 pounds) and is responsible for several life-sustaining functions. It is both an essential organ and a gland, as it produces chemicals, proteins, and hormones that the body needs. The liver is divided into four lobes, with the right lobe being the largest. It is a vital organ for digestion and detoxification, and it plays a key role in breaking down substances like alcohol, drugs, and
| Characteristics | Values |
|---|---|
| Description | A large, spongy, dark reddish-brown, wedge-shaped organ with two lobes of unequal size and shape |
| Weight | 1.5 kilograms (3.3 pounds) on average |
| Width | 15 centimetres (6 inches) |
| Location | Right upper quadrant of the abdomen, below the diaphragm, to the right of the stomach, and overlying the gallbladder |
| Blood vessels | Connected to two large blood vessels: the hepatic artery and the portal vein |
| Functions | Metabolism, immunity, digestion, detoxification, vitamin storage, bile production, nutrient storage, protein synthesis, glycogen storage, clotting factor production, blood filtering, and synthesis of hormones and biochemicals |
| Diseases and disorders | Alcohol-related liver disease, fatty liver disease, hemochromatosis, Wilson disease, liver cancer, autoimmune hepatitis, primary sclerosing cholangitis, primary biliary cholangitis, viral infections (hepatitis A, B, and C), cirrhosis, abscesses, and glycogen-storage diseases |
| Symptoms of impaired function | Jaundice, easy bruising, itchy skin, low blood pressure, pain in the abdomen, swelling in the legs or ankles, tremors, weakness, loss of balance, constant fatigue, and yellowing of the eyes and skin |
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What You'll Learn
The liver is not a muscle, it's an organ
The liver is a large, reddish-brown, spongy organ in the abdomen that performs many important functions, including blood filtering. It is not a muscle but is considered a gland because it makes chemicals, proteins, and hormones that the body needs. The liver is the largest internal organ in the human body, weighing approximately 1.5 kilograms (3.3 pounds) and located in the right upper quadrant of the abdomen, below the diaphragm, and mostly shielded by the lower right rib cage.
The liver has two main lobes of unequal size and shape—the right lobe and the left lobe—and is divided into four parts when viewed from below, with two additional lobes between the right and left lobes. The liver is connected to two large blood vessels: the hepatic artery and the portal vein. The hepatic artery supplies the liver with oxygen-rich blood from the heart, while the portal vein carries blood containing nutrients from the digestive system.
The liver performs hundreds of vital functions, including detoxification, protein synthesis, bile production, and nutrient storage. Bile is a fluid produced by the liver that aids in the digestion and absorption of fats. The liver also plays a crucial role in metabolizing and detoxifying drugs and other toxins in the blood, preparing them for elimination from the body.
The liver is subject to various disorders and diseases, including liver cancer, hepatitis, cirrhosis, and fatty liver disease. Certain drugs, toxins, and lifestyle choices can also damage the liver. It is essential to maintain a healthy liver by avoiding toxins, drinking alcohol in moderation, and following healthcare professionals' instructions regarding medications.
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The liver is the largest internal organ
The liver is a large, reddish-brown, spongy organ found in the upper right quadrant of the abdomen, below the diaphragm and shielded by the lower right rib cage. It is the heaviest and largest internal organ in the human body, weighing approximately 1.5 kilograms (3.3 pounds) in adults. The liver has two main lobes of unequal size and shape, with the right lobe being larger than the left. Each lobe is further divided into segments.
The liver is an essential organ, performing hundreds of vital functions necessary to sustain life. It is a major metabolic organ, responsible for several life-sustaining functions such as metabolism, immunity, digestion, detoxification, and vitamin storage. It manufactures blood serum proteins, including albumin and several clotting factors, and supplies them to the blood. The liver also plays a crucial role in detoxifying poisonous substances, preparing them for elimination in the urine or feces.
One of the liver's critical functions is the production of bile, a yellow-green fluid that aids in the digestion and absorption of fats. Bile is secreted by the liver and transported through a series of tubes (bile ducts) to the small intestine or the gallbladder for storage. The gallbladder, located under the right lobe of the liver, concentrates and stores bile before releasing it into the duodenum to assist in digestion.
The liver is also involved in the synthesis of various proteins and biochemicals, including hormones, and the conversion and storage of nutrients such as glucose and glycogen. It breaks down red blood cells and metabolizes bilirubin, a waste product of hemoglobin breakdown. Additionally, the liver plays a role in vitamin storage, particularly fat-soluble vitamins.
The liver is susceptible to various disorders and diseases, including liver cancer, hepatitis, cirrhosis, and fatty liver disease. It is highly resilient and can regenerate itself, even after a large portion has been removed.
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The liver is located in the upper right quadrant of the abdomen
The liver is a large, reddish-brown, wedge-shaped organ with two lobes of unequal size and shape. It is the largest internal organ in the human body, weighing approximately 1.5 kilograms (3.3 pounds) and located in the upper right quadrant of the abdomen, below the diaphragm and mostly shielded by the lower right rib cage. The liver is connected to two large blood vessels: the hepatic artery and the portal vein. The hepatic artery carries oxygen-rich blood from the aorta via the celiac trunk, while the portal vein carries blood rich in digested nutrients from the entire gastrointestinal tract.
The liver performs a wide range of essential biological functions, including the synthesis of various proteins and biochemicals necessary for digestion and growth. It is responsible for producing bile, which helps in the digestion and absorption of lipids or fats, and stores and metabolises fat-soluble vitamins. The liver also plays a crucial role in the metabolism and detoxification of several chemical substances, such as drugs and alcohol, and the breakdown of red blood cells.
The liver is subject to various disorders and diseases, including liver cancer, which is common and often occurs as secondary tumours originating elsewhere in the body. Other conditions that can affect the liver include alcohol-related liver disease, fatty liver disease, hemochromatosis, Wilson's disease, and viral infections such as hepatitis.
The liver is a vital organ that performs hundreds of functions necessary to sustain life. Its location in the upper right quadrant of the abdomen is essential for its role in the digestive system and the maintenance of overall health.
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The liver has two lobes of unequal size and shape
The liver is a large, reddish-brown, wedge-shaped organ. It is the largest visceral structure in the abdominal cavity, and the largest gland in the human body. It is located in the right upper quadrant of the abdomen, below the diaphragm, and is mostly shielded by the lower right rib cage.
The lobes contain thousands of lobules (small lobes) that are made up of millions of hepatocytes, which are the basic metabolic cells. The lobules are held together by a fine, dense, irregular, fibroelastic connective tissue layer extending from the fibrous capsule covering the entire liver, known as Glisson's capsule.
The liver is a vital organ that performs hundreds of functions necessary to sustain life. It is responsible for producing bile, which helps in the digestion and absorption of lipids (or fats). It also stores and metabolises fat-soluble vitamins. The liver is crucial in the metabolism or detoxification of several chemical substances such as drugs and poisons. It also plays a role in the metabolism of thyroid hormones and the synthesis of fundamental plasma proteins like albumin and clotting factors.
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The liver performs many essential functions
The liver is a large, reddish-brown, spongy, wedge-shaped organ in the abdomen that performs many essential functions. It is the body's largest gland and internal organ, weighing about three pounds in an adult. The liver is located in the upper right quadrant of the abdomen, below the diaphragm, and on top of the stomach, right kidney, and intestines. It has two lobes of unequal size and shape, with the right lobe being larger than the left.
The liver is a major metabolic organ that performs hundreds of functions necessary to sustain life. It is involved in the detoxification of the body, the synthesis of proteins, and the production of various other biochemicals necessary for digestion and growth. The liver also produces bile, a fluid that aids in the breakdown of dietary fat. Bile helps carry away waste and break down fats in the small intestine during digestion. It also contains bile salts needed for the digestion of fats in the diet.
The liver also plays a role in thyroid hormone function and the synthesis of plasma proteins, such as albumin, binding globulins, protein C, and protein S. It regulates blood levels of amino acids and processes hemoglobin for its iron content. The liver also converts poisonous ammonia to urea and regulates chemical levels in the blood.
In addition to its metabolic functions, the liver also helps support immunity, digestion, and vitamin storage. It stores and/or metabolizes fat-soluble vitamins such as vitamins A, D3, and E. The liver also receives vitamin K, which is essential for the function of the liver enzyme gamma-glutamyl carboxylase. The liver is a vital organ, and its proper functioning is crucial for maintaining overall health and homeostasis in the body.
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Frequently asked questions
The liver is a major metabolic organ found in vertebrates. It is a large, reddish-brown, spongy, and wedge-shaped organ with two lobes of unequal size and shape. It is the largest solid organ in the body, weighing approximately 1.5 kilograms in adults.
The liver performs many essential functions such as detoxification, protein synthesis, bile production, and nutrient storage. It is responsible for producing bile, which helps in the digestion and absorption of lipids or fats. The liver also plays a role in the metabolism of thyroid hormones and the synthesis of fundamental plasma proteins.
The liver is located in the right upper quadrant of the abdomen, below the diaphragm, and mostly shielded by the lower right rib cage. It is connected to two large blood vessels: the hepatic artery and the portal vein.
The liver is susceptible to various disorders and diseases, including abscesses, cancer, and viral infections such as hepatitis. Liver damage can lead to impaired liver function, which may result in jaundice, a condition characterized by a yellowing of the eyes and skin due to excessive bilirubin in the blood. In some cases, the liver has the ability to regenerate and replace damaged tissue. However, in cases of complete liver failure, transplantation may be necessary.
