MCAT Biology Question 41: Answer and Explanation
Home > MCAT Test > MCAT biology practice tests
Test Information
- Use your browser's back button to return to your test results.
- Do more MCAT biology practice tests.
Question: 41
11. Following a myocardial infarction, the heart often heals by the creation of a scar by fibroblasts. This is an example of:
- A. complete regeneration.
- B. incomplete regeneration.
- C. competency.
- D. multipotency.
Correct Answer: B
Explanation:
After an injury, healing occurs by some sort of regenerative process. In humans, some tissues, such as the liver, are capable of regenerating tissue with much the same function and structure as the previous tissue. However, the heart is not capable of this sort of regeneration, often forming a fibrous scar in an area of injury. This is an example of incomplete regeneration, in which newly formed tissues are not identical in structure or function to the tissues that have been injured or lost.