A Level Biology Revision "Neutrophils, Macrophages and Phagocytosis"

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In this video, we look at neutrophils, macrophages and phagocytosis. First we explore the different categories of white blood cells. We then look at how neutrophils carry out phagocytosis and the role of opsonins. Then, we explore the role of macrophages as antigen-presenting cells. Finally, we look at cytokines.

Image credits:

Human Skin Structure
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XenonR, CC BY 3.0 https://creativecommons.org/licenses/...

Tear
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NessaLand, CC BY 2.0 https://creativecommons.org/licenses/..., via Wikimedia Commons

Fresh wound
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Jpbarrass, Public domain, via Wikimedia Commons

Lining of treachea

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Magscope, CC BY-SA 4.0 https://creativecommons.org/licenses/..., via Wikimedia Commons

Inflammation
https://commons.wikimedia.org/wiki/Fi...
Harrygouvas at English Wikipedia, CC BY-SA 3.0 https://creativecommons.org/licenses/..., via Wikimedia Commons