Yes: The heart valve is specific tissue made of collagen that is thin layered yet durable.
Answered 6/23/2013
6.4k views
Yes: The valves are tough fibrous tissue that are very durable. Over your lifetime the valves open and close millions of times.
Answered 5/29/2016
5k views
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question