What is cardiac muscle tissue?
Cardiac muscle tissue is only found in your heart, where it performs coordinated contractions that allow your heart to pump blood through your circulatory system. Keep reading to learn more about the function and structure of cardiac muscle tissue, as well as conditions that affect this type of muscle tissue. How does it function?
Where are smooth muscle fibers found in the heart?
Smooth muscle fibers are found in various locations within the heart, including the walls of the coronary arteries, the veins that return blood to the heart, and the muscular layers of the heart itself. What layer of the heart wall is mostly cardiac muscle tissue?
What are cardiac muscle fibers made of?
Each fiber consists of an inner core of collagen surrounded by a single layer of muscle cells. The inner core of collagen provides strength to the muscle fiber and allows it to contract without leaking inside the vessel. The outer layer of cardiac muscle fibers forms the surface of the heart and is responsible for its shape.