Which organ is best in human body?

Heart. The heart is the most important organ of the circulatory system, which helps deliver blood to the body. It works with the lungs to add oxygen to blood and pump this freshly oxygenated blood through the blood vessels and around the body.

medicalnewstoday.com - Organs in the body: Diagram and all you need to know

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Keep reading to learn more about the organs of the body, the various organ systems, and some guidelines on how to maintain optimum health. In the human body, there are five vital organs that people need to stay alive. These are also a number of other organs that work together with these vital organs to ensure that the body is functioning well. The interactive body map below shows the organs of the body and which systems they play a role in. Click on the map to learn more. The vital organs are those that a person needs to survive. A problem with any of these organs can quickly become life threatening. It is not possible to live without these organs. That said, in the case of the paired kidneys and lungs, a person can live without one of the pair. The sections below will look at the five vital organs in more detail.

Brain

The brain is the body’s control center. It forms the core of the central nervous system by creating, sending, and processing nerve impulses, thoughts, emotions, physical sensations, and more.

The skull encloses the brain, protecting it from injury.

Neurologists are doctors who study the nervous system. Over time, they have identified numerous parts of the brain, including systems within the brain that function similarly to independent organs. The brain is made up of three main subparts: the cerebrum, the cerebellum, and the brainstem. Within these areas, there are several key components of the brain that, together with the spinal cord, comprise the central nervous system.

The major areas of the central nervous system include:

The medulla: This is the lowest part of the brainstem. It helps control heart and lung function. This is the lowest part of the brainstem. It helps control heart and lung function. The pons: Located above the medulla in the brainstem, this area helps control eye and facial movement. Located above the medulla in the brainstem, this area helps control eye and facial movement. The spinal cord: Extended from the base of the brain and down the center of the back, the spinal cord helps with many automatic functions, such as reflexes. It also sends messages to and from the brain. Extended from the base of the brain and down the center of the back, the spinal cord helps with many automatic functions, such as reflexes. It also sends messages to and from the brain. The parietal lobe: Situated in the middle of the brain, the parietal lobe supports the identification of objects and spatial reasoning. It also plays a role in interpreting pain and touch signals. Situated in the middle of the brain, the parietal lobe supports the identification of objects and spatial reasoning. It also plays a role in interpreting pain and touch signals. The frontal lobe: The frontal lobe, which is located in the front of the head, is the largest section of the brain. It plays a role in many conscious functions, including personality and movement. It also helps the brain interpret smells. The frontal lobe, which is located in the front of the head, is the largest section of the brain. It plays a role in many conscious functions, including personality and movement. It also helps the brain interpret smells. The occipital lobes: Positioned near the back of the brain, the occipital lobe primarily interprets vision signals.

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Positioned near the back of the brain, the occipital lobe primarily interprets vision signals. The temporal lobes: Located on either side of the brain, the temporal lobes play a role in numerous functions, including speech, scent recognition, and short-term memory. The brain’s two halves are called the right and left hemispheres. The corpus callosum connects these two hemispheres.

Heart

The heart is the most important organ of the circulatory system, which helps deliver blood to the body. It works with the lungs to add oxygen to blood and pump this freshly oxygenated blood through the blood vessels and around the body. The heart also has an electrical system within. Electrical impulses within the heart help ensure that it beats with a consistent rhythm and proper rate. The heart rate increases when the body needs more blood, such as during intense exercise. It decreases during times of rest. The heart has four chambers. The two upper chambers are called atria, and the two lower chambers are called ventricles. Blood flows into the right atrium from the veins of the heart and body (except the lungs), then it flows into the right ventricle. From there, it flows into the pulmonary artery, which has branches that reach the lungs. The lungs then oxygenate the blood. This oxygenated blood travels from the lungs, through pulmonary veins that lead back and join together, to the left atrium, and then through the left ventricle. From there, the heart pumps the blood through an artery that branches to distribute blood to itself and other body parts (except the lungs). The heart has four valves that ensure that blood flows in the right direction. The heart valves are:

the tricuspid valve

the pulmonary valve

the mitral valve

the aortic valve

Learn more about the heart here.

Lungs

The lungs work with the heart to oxygenate blood. They do this by filtering the air a person breathes, then removing excess carbon dioxide in exchange for oxygen. Several parts of the lungs help the body take in air, filter it, and then oxygenate the blood. These are: The left and right bronchi: The trachea splits into these tubes, which extend into the lungs and have branches. These smaller bronchi split into even smaller tubes called bronchioles. The trachea splits into these tubes, which extend into the lungs and have branches. These smaller bronchi split into even smaller tubes called bronchioles. The alveoli: The alveoli are tiny air sacs at the end of the bronchioles. They work like balloons, expanding when a person inhales and contracting when they exhale. The alveoli are tiny air sacs at the end of the bronchioles. They work like balloons, expanding when a person inhales and contracting when they exhale. The blood vessels: There are numerous blood vessels in the lungs for carrying blood to and from the heart. With extensive medical care, a person can live without one lung, but they cannot survive with no lungs.

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The diaphragm, which is a thick band of muscle directly under the lungs, helps the lungs expand and contract when a person breathes.

Learn more about the lungs here.

Liver

The liver is the most important organ of the metabolic system. It helps convert nutrients into usable substances, detoxifies certain substances, and filters blood coming from the digestive tract through a vein before it joins venous blood flow from other parts of the body. Oxygenated blood reaches the liver via an artery. The majority of liver mass is in the upper right side of the abdomen, just under the rib cage.

The liver plays many roles in digestion and filtering the blood, including:

producing bile

helping the body filter out toxic substances, including alcohol, drugs, and harmful metabolites

regulating blood levels of various important chemicals, including amino acids

making cholesterol

removing some bacteria from the blood

making some immune factors

clearing bilirubin from the blood

regulating the process of blood clotting, so that a person does not bleed too much and does not develop dangerous blood clots The liver partners with the gallbladder to deliver bile to the small intestine. The liver pours bile into the gallbladder, which then stores and later releases the bile when the body needs it to help with digestion. A person can live without portions of their liver, but the liver itself is vital for life.

Learn more about the liver here.

Kidneys

The kidneys are a pair of bean shaped organs, and each is about the size of a fist. They are located on either side of the back, protected inside of the lower part of the rib cage. They help filter blood and remove waste from the body. Blood flows from the renal artery into the kidneys. Each kidney contains about a million tiny units for filtration known as nephrons. They help filter waste to the urine and then return the filtered blood to the body through the renal vein. The kidneys also produce urine when they remove waste from the blood. Urine flows out of the kidneys through the ureters, then down to the urinary bladder. A person can live with just one kidney. When a person is experiencing severe kidney failure, dialysis can filter the blood until they get a kidney transplant or their kidney recovers some function. Some people need to undergo hemodialysis long term.

Learn more about the kidneys here.

medicalnewstoday.com - Organs in the body: Diagram and all you need to know

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