Respiration
Without respiration the red fox would not be able to supply its vital organs and muscles with the vital element of oxygen that enables it to have energy.
Breathing
Inside the chest of a red fox is it's rib-cage and inside that is the lungs and diaphragm used for breathing. The oxygen enters the body through the nasal and mouth passages that link together at the trachea. The air travels down the trachea and into the lungs of the red fox. the trachea splits into two different paths the lead into the left and right side of the lungs. These paths are called the bronchius and as they split into more and more it is called the bronchioels. At the end of each bronchiole is a sack called an alveoli which is where the gas exchange takes place. Under lungs is a diaphragm which works with the intercostal muscles outside the lungs to expand and contract to breath in and out. In this process the lungs create a vacuum like effect that sucks the air and when there is on carbon-dioxide left over and sent out.
Gaseous exchange
The gaseous exchange is the operation that occurs in the every one of the 700 million alveolis in the red foxes lungs. The oxygen that arrives at the alveoli, travel through the wall of it that is one cell thick and into the capillaries. The capillaries are what transport the oxygen into the blood vessels to be transported around the body. Capillaries also take the oxygen from the arteries to the muscles. There are so many capillaries in the red fox that altogether they amount to 95 000km in length.
Types of Respiration
There are two types of respiration, with oxygen and without. The type of with oxygen is called aerobic. As long as the oxygen is still reaching the red foxes muscles to combine with the glucose, it will continue to use it for energy and won't tire out or feel pain. The word equation for creating this energy is
Glucose + Oxygen->Carbon Dioxide+Water+Energy. When the red fox starts to become exhausted and the oxygen is no longer reaching it's muscles, another type of respiration takes over. This is called Anaerobic Respiration. Instead of combine with oxygen, the glucose turns into lactic acid which doesn't release as much energy and causes pain. The word equation for this is Glucose->Energy+Lactic Acid. After there is a build-up of lactic acid it cause a cramp which means that the mucles will stop working properly or at all until it gets rid of the acid. After exhausting itself, the red fox will stop and breath heavily to get the oxygen back into the muscles and this is called oxygen debt
Glucose + Oxygen->Carbon Dioxide+Water+Energy. When the red fox starts to become exhausted and the oxygen is no longer reaching it's muscles, another type of respiration takes over. This is called Anaerobic Respiration. Instead of combine with oxygen, the glucose turns into lactic acid which doesn't release as much energy and causes pain. The word equation for this is Glucose->Energy+Lactic Acid. After there is a build-up of lactic acid it cause a cramp which means that the mucles will stop working properly or at all until it gets rid of the acid. After exhausting itself, the red fox will stop and breath heavily to get the oxygen back into the muscles and this is called oxygen debt