why does the breath rate increase after exercise?

Question

i need a full explanation at least two large paragraphs for my homework now!

thanks

Answer 1

As your muscle cells use up energy when you exercise on them and you can't breath in enough oxygen to keep them going, so your body only half respires your food to quickly produce energy, which causes a build up of lactic acid in muscles. After you finish exercising you must fully break down the lactic acid which is broken down with oxygen, this causes heavy, deep breathing and increased breathing levels as you pay back the "oxygen debt" as it is referred to.

Answer 2

When you exercise CO2 builds up in blood, pH of blood changes, detected by the carotid and aortic bodies of blood vessels, info about the chemical state of the blood is sent to the medulla oblangata of the brain, This region contains the respiratory centre, respiratory centre controls inhalation and exhalation. In exercise messages are sent to these regions and breathing rate is increased so that more oxygen can be transported by the blood to support the tissues, however the sole purpose of increasing the breath rate is to remove CO2 which is toxic to cells.

Answer 3

Exercise
All types of exercise involve using your muscles to generate movement. Regular exercise can increase muscle size, strength and endurance. But not all exercise produces the same effect.

Endurance exercise

Endurance exercises like running or cycling make your muscles stronger and less likely to get tired. This sort of exercise doesn't only benefit your skeletal muscles. It also:

Enlarges your heart so it can pump blood around your body more quickly
Increases the capacity of your lungs so you can breathe in more oxygen with each breath
Improves your digestion
Makes your metabolism more efficient
Strengthens your skeleton
Improves your coordination
Endurance exercise isn't, however, the best type of exercise to do if you want to make your muscles bigger.

Bodybuilding

You can increase muscle size by doing resistance exercises. Resistance exercise involves using your muscles to move an extremely heavy load. This type of exercise forces your muscles to contract as hard as they can, which leads to an increase in the number of contractile filaments within your muscle cells. This makes your muscle cells enlarge and, as a result, it makes your muscles bigger.

Endurance and resistance combined

Some forms of exercise offer the benefits of both endurance and resistance exercise. Swimming improves endurance, and as you have to push against water to move forward, it is a resistance exercise, too.

Energy is directed to your muscles during exercise

If you're doing intense exercise, other systems in your body focus their efforts on helping your muscles. Your heart beats more quickly so that it can pump more blood to your muscles, to provide them with more oxygen and nutrients. Your digestive system slows down so that it does not use up energy that your muscles need.

Hope that helped a bit x

Answer 4

Well, I think you need to do your own homework, so I'm only going to give you a hint. Think about what happens when you exercise. Your muscles move a lot. What do your muscles need to function? Blood and oxygen. Figure it out from there. you'll thank me some day when you can think on your own.

Answer 5

Go check out something connected to your oxygen levels in your blood stream. When you exercise, you need more oxygen in your blood to help your body move etc. Without oxygen in your blood, your body wont work as well because thats how our bodies are made up. So just research this subject and I think you will find out more than what I say here.

Answer 6

I'm not doing your work for you either, but you need oxygen for your muscles to work well and you breathe harder to get enough. the byproduct of that is carbon dioxide and you also breathe hard to get rid of the excess. now you write it in 2 paragraphs in your own words.