When its needed (when its used up).
when they used, or excisedd
broken down energy from food.
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.
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.
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.
Organs oxygen Food Water Energy
Arteries carry oxygen to the muscles of the body.
The cardiovascular system sends oxygen to the muscles.
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
nutrition and oxygen
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.
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.