The cells in the heart need a constant supply of nutrients / oxygen and to get rid of their waste products ans that why it needs its own special circulatory system.
The Hardening and narrowing of the arteries caused by a buildup of cholesterol plaques is known as [ atherosclerosis ]
Answer:
Is there suppose to be a photo
Anything except lung cancer if that makes sense, I don't know what your options are
Hope that helps feel free to ask me more questions.:)