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Organs exist in most multicellular organisms. In single-celled organisms such as members of the eukaryotes, the functional analogue of an organ is known as an organelle. In plants, there are three main organs. [3] The number of organs in any organism depends on the definition used.
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...
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 79 organs (about ~103).
While organs are technically made up of cells (as is everything else in an organism), organs themselves are defined as groups of specialized tissues that work together to carry out a function in the body.
The most basic unit is the cell; groups of similar cells form tissues; groups of different tissues make up organs; groups of organs form organ systems; cells, tissues, organs, and organ systems combine to form a multicellular organism.
organ, in biology, a group of tissues in a living organism that have been adapted to perform a specific function. In higher animals, organs are grouped into organ systems; e.g., the esophagus, stomach, and liver are organs of the digestive system.
Organs are the body's vital structures, using complex structures to perform specialized tasks and connect bodily systems to each other. Learn more about how different organs look and work.
The body has 11 different organ systems. Each group of organs has a different complex function, such as movement, breathing, or digestion.
Organs exist in most multicellular organisms, including not only humans and other animals but also plants. … An organ is a collection of tissues joined in a structural unit to serve a common function.
This page discusses the anatomy of the human body systems. Click now to learn everything about the all human systems of organs now at Kenhub!