An organ is a collection of tissues in the body that performs a specific function. Organs can be found in many living organisms, including humans, animals, and plants.
In humans, the body has many organs, each with a specific role in maintaining bodily functions. For example, the heart is an organ that pumps blood throughout the body, the lungs are organs that allow for respiration, and the liver is an organ that plays a critical role in metabolism and detoxification.
Organs are composed of different types of tissues, such as muscle, connective, nervous, and epithelial tissues, that work together to perform their specialized functions. The structure and function of organs are closely related, and any disruption in their normal functioning can lead to health problems and diseases.