Which procedure involves taking a small sample of tissue for examination under a microscope?

Which procedure involves taking a small sample of tissue for examination under a microscope?

• A. Endoscopy
• B. Cytology
• C. Bioculture
• D. Biopsy

Answer: (D)

Taking a small piece of tissue to examine under a microscope is called a biopsy. This sample preserves the tissue’s architecture, allowing a pathologist to assess how cells are organized within the surrounding tissue, which is key for diagnosing conditions like cancer or inflammatory diseases. The other options refer to different concepts: endoscopy is a procedure to visually inspect internal organs and may involve sampling, but it is not defined by taking tissue samples; cytology analyzes individual cells or small groups of cells without preserving the full tissue structure; bioculture involves growing microorganisms in culture, not examining tissue.

Taking a small piece of tissue to examine under a microscope is called a biopsy. This sample preserves the tissue’s architecture, allowing a pathologist to assess how cells are organized within the surrounding tissue, which is key for diagnosing conditions like cancer or inflammatory diseases. The other options refer to different concepts: endoscopy is a procedure to visually inspect internal organs and may involve sampling, but it is not defined by taking tissue samples; cytology analyzes individual cells or small groups of cells without preserving the full tissue structure; bioculture involves growing microorganisms in culture, not examining tissue.