How does oxygen move into blood

Blood is made of many components, one of them being red blood cells. These are responsible for carrying oxygen around the body. Haemoglobin is the protein molecule within red blood cells that binds to oxygen.

In our lungs, we breathe in the oxgyen into small tree-like structures called alveoli right at the end of the lung tissue. The oxygen diffuses across these thin walls and across the thin walls of the blood vessels. Once in the blood, they bind to the haemoglobin forming oxyhaemoglobin which can then be taken to the organs of the body. 

NA
Answered by Nisha A. Biology tutor

9988 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Explain how blood circulates through the heart?


name 3 organelles that are present only in plant cells


Describe how low blood water levels are controlled in the human body. (5 marks)


What is the difference between a phagocyte and a lymphocyte?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning