Which term refers to protein found in connective tissue?

• A. Circumcise
• B. Collagen
• C. Conjunctivitis
• D. Coronary Ischemia

Answer: (B)

Collagen is the main structural protein in connective tissue, forming fibrous strands that create the extracellular framework giving tissues their strength and shape. It’s produced by fibroblasts and organized into a triple-helix structure rich in glycine, proline, and hydroxyproline, which lets it form strong, flexible fibers found in skin, bone, cartilage, tendons, and ligaments. The other terms refer to actions or conditions (removing foreskin, pink eye, heart tissue lacking blood supply) and are not proteins or components of connective tissue.