Which statement about organs is correct?

Which statement about organs is correct?

• A. A single type of tissue performing a unique function
• B. A collection of organs that work together
• C. A group of tissues that perform different functions
• D. Specialized cells and tissues grouped together to perform a specific body function for a common purpose (e.g., kidney, heart, intestines, and skin)

Answer: (D)

Organs are structures made of multiple tissue types that cooperate to perform a specific body function. Each organ brings together specialized cells and tissues that work toward a common task, allowing the organ to carry out its role in the body. For example, the kidney uses different tissues to filter blood, the heart combines muscle, nerves, and connective tissues to pump blood, the intestines integrate muscle, glandular, and lining tissues to digest and absorb nutrients, and the skin includes epithelial, connective, and nerve tissues to protect and regulate with sensation. This coordinated, focused function across tissues is what defines an organ, which is why that statement is the best choice. Other options mischaracterize organs as a single tissue, or as a collection of organs, or as tissues within an organ performing unrelated functions, which does not reflect how organs are structured and work.

Organs are structures made of multiple tissue types that cooperate to perform a specific body function. Each organ brings together specialized cells and tissues that work toward a common task, allowing the organ to carry out its role in the body. For example, the kidney uses different tissues to filter blood, the heart combines muscle, nerves, and connective tissues to pump blood, the intestines integrate muscle, glandular, and lining tissues to digest and absorb nutrients, and the skin includes epithelial, connective, and nerve tissues to protect and regulate with sensation. This coordinated, focused function across tissues is what defines an organ, which is why that statement is the best choice. Other options mischaracterize organs as a single tissue, or as a collection of organs, or as tissues within an organ performing unrelated functions, which does not reflect how organs are structured and work.