Organs

Definition

Organs are specialized structures within an organism that perform specific functions necessary for life. They are composed of various tissues working together to achieve a common goal.

5 Must Know Facts For Your Next Test

1. Organs are part of organ systems, which are groups of organs working together for complex functions.
2. The human body has several vital organs including the heart, lungs, liver, and kidneys.
3. Each organ is made up of multiple types of tissues such as epithelial, connective, muscle, and nervous tissues.
4. Organs can be internal like the stomach or external like the skin.
5. Organ function is crucial for maintaining homeostasis in an organism.

Review Questions

• What defines an organ in biological terms?
• How do tissues contribute to the structure and function of organs?
• Name at least three vital organs in the human body and their primary functions.

Related terms

Tissue: A group of similar cells that work together to perform a specific function.

Organ System: A group of organs that work together to perform complex bodily functions.

Homeostasis:

The process by which organisms maintain a stable internal environment despite changes in external conditions.