In zoology, an organ is a collection of tissues that work together to perform a specific function in a living organism. Think of it like a team of workers, each with a specific job, coming together to complete a larger task.
For example, the heart is an organ that pumps blood throughout the body. It's made of different tissues, each with a unique role: muscle tissue to contract and pump, connective tissue to provide structure, and nervous tissue to regulate its function.
Organisms often have multiple organs working together in organ systems. For example, the digestive system includes the esophagus, stomach, and liver, all contributing to the breakdown and absorption of food.
Here are some examples of organs found in animals:
- Heart: Pumps blood throughout the body.
- Lungs: Exchange oxygen and carbon dioxide.
- Stomach: Digests food.
- Liver: Filters blood and produces bile.
- Brain: Controls the nervous system.
- Kidneys: Filter waste from the blood.
- Skin: Protects the body and regulates temperature.
These are just a few examples of the many organs found in animals. Understanding how organs work together is crucial for comprehending the overall functioning of a living organism.
