Blood 2, Cells, structure and function of red and white blood cells

Red blood cells are erythrocytes
The function of the erythrocytes is to carry oxygen from lungs to tissues and
carbon dioxide from tissues to lungs. The percentage of blood which is composed
of red cells is termed the haematocrit; this may be lowered in some forms of
anaemia. Red cells are biconcave discs. This shape provides a large surface area
for gaseous exchange and also gives the cell flexibility. Some capillaries are so
small the red cells have to squeeze through by deforming their shape. Red cells are
about 7 micrometres in diameter (i.e. 7 one thousandths of a millimetre). Every
cubic millimetre (mm3) of blood contains about 5 million red blood cells.

[revolution]

No editing, no cue cards and no stumbling for words. Very impressive.

[ms-jmjl]

Every lecture that I listen to is so unique, elaborate and yet simple. Your passion for the subject is so contagious that it rubs off on me and I want to listen to more. Thank you

[Campbellteaching]

Lesson on blood cells, complex, but simple.

[reginawahjoeni]

Thank you so much. It is true that its easier to master it with understanding it rather than memorizing it. It really helped! So thank you sir. I hope you have a nice day

[wendykreck]

Thank you once again for your wonderful work. I have found your YouTube lectures the most helpful of all my learning resources.

[MohammedAli-dkji]

Nice explanation, thank you, your follower, from Iraq

[yarat]

Can't thank you enough for these videos. I use them to refresh topics I haven't revised in a long time and which maybe aren't so important for my speciality.

[melinazamani]

You have saved my life!! Thank you so much :)

PS. also love your facial expressions haha, keep up the amazing work!

[annajones]

This is an incredibly informative video! The information is laid out so clearly, amazing work.

[daudrehman]

Most helpful stuff (related to blood cells ), I came up with on YouTube....
Thnxx a lot for uploading this

[itinefrancis]

Your work is absolutely fabulous. ....Your a great educator

[zainabbuba]

Thanks for making my studies easier. The clips are just awesome 👌

[abibatubah]

This tutorial was a great help to me on my exam. Thanks very much Doctor!

[rabeelahmed]

Thank you very much for your lessons. They are very well explained. They helped me greatly in my Histology exam revision!

[priyankashukla]

Thnkyou for ur valuable lessons which are very simple to understand . Thnks a lot Dr .John Campbell Sir

[mrtheboss]

Am understanding Anatomy of the blood ..💗thanks alot sir

[emmanuelkipkemoi]

I love your simple explanation, , it is easier to understand

[elenarybina]

Thank you so much for the clearest explanation and simple scheme.

[ianmcclue]

Brilliant! Keep up the amazing work, well explained and very simple to digest.

[mikeocampo]

Thank you for your videos, you have helped me so much throughout nursing school .