The human body consists of many interacting systems of organs. These interact to maintain homeostasis, keeping the body in a stable state with safe levels of substances such as sugar and oxygen in the blood. Learn parts of the body names with a labeled diagram. Explore head, face, trunk, arms, legs, sense organs, and basic internal organs with meanings. A clear, visual guide to human anatomy — body systems, organs & how they work together, with diagrams for students and healthcare learners. Learn about the organs in the body. Get a diagram and list of human organs and discover their location and functions. The five vital organs in the human body are the brain, heart, lungs, kidneys, and liver. Other organs include the gallbladder, pancreas, and stomach. Organ systems, such as the nervous system. There are 12 major anatomy systems: Skeletal, Muscular, Cardiovascular, Digestive, Endocrine, Nervous, Respiratory, Immune/Lymphatic, Urinary, Female Reproductive, Male Reproductive, Integumentary. Select a system below to get started. Organs are structures inside your body that have specialized jobs. They include internal organs like your heart and brain, plus external ones like your skin. Human Body Organ Locations: This chart helps identify the locations of major organs like the brain, heart, lungs, liver, kidneys, and intestines, providing insight into their function and interrelationship. The body includes nine major organ systems, each composed of various organs and tissues that work together as a functional unit. The chief constituents and prime functions of each system are: Since there is no single standard definition of what constitutes an organ, the number of organs vary depending on how one defines an organ. For example, this list contains more than 78 organs (about ~91).