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Oxygen plays many roles in the metabolic pathways that support contracture of the heart's cardiac muscle tissue.
The heart muscle is the only muscle in the body which is always working. It cannot stop and rest, because the body requires a constant circulation of blood, to supply the tissues of the body with oxygen and nutrients. The brain can only survive for 3 minutes without oxygen. So since the heart must constantly work, it requires a constant supply of oxygenated blood. Without it, the heart would not have the energy it requires to do its work, and would stop.
What else can I help you with?
Why is oxygen so much more critical to the heart muscle then to skeletal muscle?
It isn't more critical, the heart muscle itself is simply one of the most important and necessary muscles which we need to survive. Any muscle when deprived of oxygen will begin to die off, in the case of a thigh muscle however it's more likely to just necessitate amputation (to prevent gangrene from rotting tissue) or it would just result in the muscle not working anymore. The only real distinction that if the heart muscle just "doesn't work anymore" you're dead, you can survive without a bicep or tricep, not without a heart.Oxygen is vital to all muscles. Without oxygen cells die. When oxygen is not received to a skeletal muscle, the muscle wil begin to die out and you will feel tightness, cramps and a lot of pain in the effected region. When heart muscle is deprived of oxygen that is what is known as a heart atack. Blood (oxygen) is blocked from the heart and the muscle of the heart (myocardium) begins to die off. If too much of the myocardium dies the heart will not work properly. The heart will begin to go into Ventricalarfibrulation (V-Fib).
What does a hearty muscle do?
Are you talking about the heart? If so, the heart pumps blood through your veins and gives your blood oxygen. I don't think there is a hearty muscle.
Can you pull a muscle in your heart?
No because your heart is a muscle so there are no muscles within the heart.
Is the heart made of smooth muscle?
The heart is a muscle so the heart is made of the cardiac muscle.
Why are the arteries found on the outside of the heart?
Interesting question. I'd presume that as the heart is constantly pumping blood, the oxygen in the blood will diffuse into the cells that make up the inner part of the muscle of the heart. This is a slow process, however, and the heart needs a lot of oxygen, so it has arteries on the outside of it. This would mean the heart muscle is getting a rich supply oxygen from both sides of the muscular wall, allowing it to work as efficiently as it does.
How does exercise effect heart rate?
== == it helps because it exercises your heart so it doesn't have to pump so much blood when you are exercise.
Why does heart rate increases?
because you need more oxygen to be delivered to the muscle and more waste to the lungs. when you are exercising your muscles need oxygen so the blood stars pumping faster to get the oxygen to the muscles.
What is the function of the blood vessels on the outer wall of the heart?
Nutrients and oxygen have to get to the outside of the heart. So the blood vessels on the outside have that job. The nutrients and oxygen can't get to the cardiac muscle from inside the heart. Blood vessels that lead from the heart that are high in oxygen and nutrients have their first branch off the aorta that goes to these blood vessels. That's how important these vessels are to the heart and how it functions.
Why is the pain of angina brought on by exercise or stress?
Your heart muscle is working all the time, so it needs a continuous supply of oxygen. This oxygen is provided by the coronary arteries, which carry blood.
What does myocardial ischemia mean?
The heart muscle is not getting enough blood. The blood supply is actually so important that the flow from the large aorta has an artery that goes to the muscle's surface before it goes to the rest of the body. If this can not be 'fixed' in someway, the heart muscle die from lack of enough oxygen.
Blood caries what two things to your muscle cells?
Blood carries glucose and oxygen to muscle cells. Muscles require more of these during exercise, and so the heart pumps harder and faster.
Why do you think the muscle of the heart is so thick of a sheep?
The muscle of a sheep's heart is thick for the same reason our heart muscle is thick. It is thick as it has to pump blood around the body, and so it is under a lot of pressure.
