Anaerobic Respiration in the Muscles | Physiology | Biology | FuseSchool

Ever wondered why feel all stiff the day after doing lots of exercise, in order for you to contract your muscles they need the energy that is released in respiration. However, when you're doing heavy exercise for a long time the muscles can't always get the oxygen they need to carry out aerobic respiration. In this case the muscle cells can switch to carry out another type of respiration called anaerobic respiration. this is respiration without oxygen so why don't we just do this respiration all the time if we don't need oxygen that we don't need to bother breathing. Well unfortunately anaerobic respiration is not as good as aerobic firstly it only produces a small amount of energy compared to aerobic respiration and also it produces a nasty waste product called lactic acid.

The muscles in your forearm which control the fingers been out carrying out anaerobic respiration. After a while the lactic acid will start to build up in the muscles and it causes pain. When you stop exercising you will need to break down this lactic acid. To do this lactic acid needs to travel in the blood to deliver. Here it is broken down using oxygen into carbon dioxide and water.

 After vigorous exercise, you may find you are still breathing very heavily for a time afterwards. This is to get the oxygen into the blood needed to break down lactic acid. We say after doing anaerobic respiration that you’re an oxygen debt, if you need to pay back the oxygen to the body. So, to answer the question at the start of the video, why do you feel stiff after exercise? it's all to do with lactic acid if you stop moving straight after exercise then the blood does not return to deliver and the lactic acid stays and the muscles. This is what makes them stiff the next day. So, it's very important to warm down after exercise or a gentle jog and stretching

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[rajeevdomble]

I have Biology test tomorrow. Thanks for the video. Really straight forward with quite a bit of information too. Keep up the good work!

[tayann]

Thank you for your very informative video! This helped me understand anaerobic respiration in the muscles for my A&P class!

[kirbgolfs]

Lactic Acid (lactate) isn't "a nasty waste product". It's actually a phenomenal fuel source. It's the accumulation of hydrogen (acidosis) which gives lactate it's bad name, but Lactate is actually shuttling as much of that excess hydrogen away from muscle when it is paired with pyruvate (bi-product found from glycolysis).

[augustineng]

The word equation is:
Glucose = lactic acid + energy
The chemical equation is:
C6H12O6 = 2C3H6O3 + ATP

[teemo]

This little experiment of holding your arm up and opening/closing your hand was very fun lol
Anyone else did it throughout the whole video?

[stabwounds]

I was done with the hand clenching after the first 30 seconds of the video

[maizaadan]

Held my arm like that for the whole vid it fell of :/ Also this helped me a lot great revision for my test tomorrow thanks!

[ebraheem-]

I Did it till the end feels like I just choked the snake with my left hand 😂💪🏻

[lisawhite]

Very good right until the end when you perpetuated the now debunked hypothesis that lactic acid is the cause of longterm muscle soreness also known as Delayed Onset Muscle Soreness (DOMS). It is now hypothesized that micro tears resulting in inflammation in the muscle cause the pain that exists 12-72 hours after exercise.

[vedantasjbranam]

Thank you so much! I learned a lot from this

[rasoolali]

love the video and your script also please don't stop uploading

[whoyouknow]

the theory behind lactic acid causing pain has been disproven

[saadanaamir]

If you haven't said to let the hand down in the end I would have keep it like that till whole night 😥😰

[saadanaamir]

Thank you for letting us down our hand 😰

[captainjeff]

I might aswell have sawed off my hand and put my leg in a blender, oof that was pain

[somebodyontheinternet]

Instructions unclear; accidentally sold my left arm on the black market

[bidishamukherjee]

does this mean that lactic acid is produced in the total absence of oxygen?

[arnavvations]

The law of conservation of energy states that energy remains constant so why at 1:14 does it say energy is produced

[rajanable]

does anyone know where in the skeletal muscle cells of a person do anaerobic respiration and aerobic respiration occur????

[jessfidler]

For anyone in my class. Aerobic has oxygen. Anaerobic doesn't.