Which of the following statements is true regarding regeneration?

• A. Occurs in tissues incapable of healing
• B. Always results in full restoration of function
• C. Only exists in skeletal muscle
• D. Involves tissues capable of regeneration

Answer: (D)

The assertion that regeneration involves tissues capable of regeneration is accurate. Regeneration is a biological process through which organisms replace lost or damaged tissues with new, functional cells of the same type. This capability is primarily seen in certain tissues, such as liver, skin, and certain types of epithelial tissues, which have a high capacity for cell division and repair.

In contrast, some tissues, like cardiac muscle and neurons, have limited regenerative ability, often leading to scarring or permanent loss of function after injury. Therefore, the essence of regeneration lies in the presence of specialized cells that can replicate and replace damaged structures, enabling a return to normal function when possible. This makes the statement about regeneration involving tissues capable of regeneration correct.