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How Blood Carries Oxygen

We all know that oxygen is the key to living. It's in the air you breathe, in your lungs and in your blood. What you might not know is how oxygen gets into your blood and how the blood carries oxygen through your body.

Blood and Oxygen - How It Works

You breathe air in through your nose and mouth. It makes its way into your lungs and dissolves in the water lining of the alveoli. Oxygen then clings to red blood cells as they pass through the alveolar capillaries - now the oxygen is in the blood.

Red blood cells Red blood cells

Blood and Oxygen - Types of Blood Vessels

Three types of blood vessels carry blood from your lungs to every cell in your body.

  • Arteries - Arteries have muscular walls that pump oxygen-filled blood away from your heart to the tissues and organs, like the brain, kidneys and liver. Arteries get smaller as they get further from your heart. At their smallest point, arteries become capillaries.
  • Capillaries - Capillaries are the tiniest blood vessels. They connect arteries to veins.
  • Veins - Veins are what bring the "used" blood back to your heart.

Blood and Oxygen - Did U Know?

  • The only part of your body that has no blood supply is the cornea in the eye. It takes in oxygen directly from the air.
  • A severe sunburn damages the blood vessels so badly that it takes four to 15 months for them to return to their normal condition.
  • The human heart creates enough pressure to squirt blood 30 feet (nine meters) out of the body.
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Number of Breaths You Take Every Day?

  • 15,400.
  • 21,600.
  • 33,500.
  • 47,200.

General In The Forums

yaverleaf11
If you'd like to start an RP, I'm open for rping. I'm trying to be a bit more active on here too haha
reply about 1 hour
austin312so
Hi, my name is Austin312so, and I want to talk to all of you about Sohan S. Thandi Foundation. Well there was someone named Sohan S. Thandi, and he was my grandpa who passed away in 2015 September 25 on my parents anniversary. He had cancer, which was spread around his body. He would try to keep it a secret, but sooner we all found out that he had cancer, this cancer was really bad whenever he drank water, it would stay in his body and go straight to his legs and feet and it was swollen. He was a great father, Army Sgt, and also a great grandpa to his grandchildren. He had 7 children, which 6 were girls, and 1 boy. We would meet him every time he'll be really happy to meet us kids.On his last day, he wanted everyone to be happy and don't worry about anything he taught me a lot to be strong and also it made me follow his footsteps and join Army Cadets. I am making this foundation for him and all the children and adults who have cancer to be cancer free. Thank you for listening.
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onabeachingaza
i agree, time is the ultimate regulation measure for humans.
reply about 4 hours
onabeachingaza
depends, in my case, when i daydream it tends to be more hopeful; things i wanna do, things i wanna be in a more positive light. meanwhile, night dreaming tends to be more of my mind rummaging through regrets and missed opportunities. day dreaming gets me through everything
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SyedaNida
SyedaNida posted in Say Anything:
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