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. 

Nisha A. GCSE Biology tutor, A Level Biology tutor, Mentoring -Medica...

7 months ago

Answered by Nisha, a GCSE Biology tutor with MyTutor

Still stuck? Get one-to-one help from a personally interviewed subject specialist


£18 /hr

Bethany F.

Degree: Pharmacy (Masters) - Bath University

Subjects offered: Biology


“Hi there! I'm Bethany and I'm a first year undergraduate student studying Pharmacy at the University of Bath. I have a great passion for biology, which through tutoring, coincides brilliantly with my love of helping others. I am very ...”

MyTutor guarantee

£20 /hr

Gemma P.

Degree: Natural Sciences (Bachelors) - Durham University

Subjects offered: Biology, Maths+ 1 more


“About MeI am a first year student sudying Biology and Chemistry as part of a Natural Sciences Degree at Durham University. I have always had a passion for science and teaching, both academically and non-academically, and have a broad...”

£18 /hr

Zoe B.

Degree: Bsc Psychology (Bachelors) - Exeter University

Subjects offered: Biology, Psychology


“Who am I? Hi there, my name is Zoe. I am currently in my first year at the University of Exeter studying Psychology. I have for a long time had a great interest and passion for Psychology and love to read into different areas. Somethi...”

About the author

Nisha A.

Currently unavailable: for new students

Degree: Medicine (Bachelors) - Birmingham University

Subjects offered: Biology, Maths+ 2 more

-Medical School Preparation-

“About me  I am a third year medical student at the University of Birmingham. I am thoroughly looking forward to passing on my passion and enthusiasm for science and information about medical school!  I have tutored Biology and Chemis...”

You may also like...

Other GCSE Biology questions

Why do bacteria become resistant to antibiotics?

What is the difference between sexual reproduction and asexual reproduction?

What is the cardiac cycle?

What is an allele? What are dominant and recessive alleles?

View GCSE Biology tutors


We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss