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When its needed (when its used up).

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8y ago

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When does food and oxygen get delivered to the muscles?

when they used, or excisedd


What do muscles need as well as oxygen?

broken down energy from food.


What happens to the heart when you've exercised?

It pumps blood around your body, the blood contains oxygen and this is then sent to the muscles you are exercising to give them energy.


Do muscles need oxygen to work?

Yes, cardiac muscles cells have a very high oxygen demand, since they are constantly in motion. This is why any shortage of oxygen causes angina, or if the oxygen deprivation is long enough, it causes death of the muscle cells - what is commonly called a heart attack.


The more oxygen the muscles receive the more energy you have true or false?

False, while you need oxygen to release the energy in muscles (to move), once there is enough oxygen, adding more does not create more energy. The energy comes form the food you eat, not the oxygen used to burn it.


What 2 substances need To be supplied to muscles constantly during exercise?

Organs oxygen Food Water Energy


Does the vessels carry oxygen to the muscles?

Arteries carry oxygen to the muscles of the body.


How does the cardiovascular system affect the skeletonmusclar system?

The cardiovascular system sends oxygen to the muscles.


Does the circulatory system bring food and oxygen to the veins?

No. The circulatory system consists of the veins and arteries. They are the way food and oxygen are transported around the body. They take food and oxygen to muscles and organs


What two things do muscles need?

nutrition and oxygen


The oxygen carried by hemoglobin in the body is used for?

The oxygen is actually used for everything the body does. It is used for movement of the muscles, some is carried to various body organs in order to work and does its job. the oxygen is the food of the body.


How do your muscles continue to get energy when you lack oxygen?

When you lack oxygen, your muscles can still produce energy through a process called anaerobic metabolism. This metabolic pathway does not require oxygen and produces energy quickly but less efficiently than aerobic metabolism. As a result, lactic acid may build up in the muscles, causing fatigue and soreness.