Major Organs of the Human Body

The major internal organs of the human body located within the head, thorax, and abdominal cavity.

• Brain: The central control organ of the nervous system located within the cranium.
• Thyroid Gland: A butterfly-shaped endocrine gland in the neck that regulates metabolism.
• Trachea: The cartilaginous tube connecting the larynx to the bronchi that carries air to the lungs.
• Lungs: The pair of respiratory organs in the chest where oxygen and carbon dioxide are exchanged.
• Heart: The muscular organ that pumps blood throughout the circulatory system.
• Liver: A large metabolic organ that detoxifies chemicals, synthesizes proteins, and produces bile.
• Stomach: The J-shaped muscular organ that secretes acid and enzymes to digest food.
• Spleen: A lymphatic organ that filters blood, stores platelets, and supports immune defense.
• Pancreas: An oblong gland behind the stomach that secretes digestive enzymes and insulin.
• Gallbladder: A small pear-shaped pouch beneath the liver that stores and concentrates bile.
• Kidneys: A pair of bean-shaped organs that filter waste from the blood to produce urine.
• Small Intestine: The long, coiled tube where most nutrient absorption takes place.
• Large Intestine: The wider tube that absorbs water and salts from indigestible food and compacts waste.
• Urinary Bladder: The hollow, flexible muscular sac that stores urine before excretion.