system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Middle piece of sperm tail made up of?
assistant
The correct answer is  Ans. (c) MitochondriaRef: IB singh 5/e, p 22, Gray's anatomy 39th ed. / 1308, Guyton 12th ed./975