The process in muscles which uses oxygen is called respiration. Muscles, like all aerobic living cells, require oxygen for aerobic respiration, which is the process by which cells convert food into energy. So when muscles contract, they are using oxygen. When muscles do not get sufficient oxygen for contraction, problems arise. The muscle cells must use anaerobic repiration which is respiration without oxygen. They cannot do this for very long though as the byproduct of anaerobic respiration is lactic acid which causes a fall in pH.
Oxygen flows into the lungs and into alveoli, which are surrounded by capillaries. The oxygen bonds to hemoglobin (the iron containing protein in blood cells) and travels to the heart. The heart then redirects the blood through arteries then into smaller capillaries that surround muscles. The oxygen is transfered from the hemoglobin to muscle cells.
lactic acid fermentation
The Lungs
The lungs
glucose ---------> lactic acid + ATP
In order for the muscle fatigue to end the muscle cells must be provided with oxygen to 'burn' the lactic acid.
lactic acid
lactic acid fermentation
The Lungs
The lungs
glucose ---------> lactic acid + ATP
In order for the muscle fatigue to end the muscle cells must be provided with oxygen to 'burn' the lactic acid.
During exercise muscle cells use oxygen.
Human muscle cells undergo lactic acid fermentation in low oxygen conditions.
All cells need Oxygen.
If the demand for oxygen is not met for a long period of time, the cells within the muscle tissue will die.
Myoglobin
All muscle cells and nerve cells use an action potential and also obey the all-or-none law