IB Biology Topic 6.3: Defense Against Infectious Disease

This video begins by introducing pathogens before discussing the primary defense organs of the body and the clotting cascade. This is followed by the examination of white blood cells and their involvement in non-specific and specific immune responses, followed by the explanation of HIV affects the immune system. The video finishes after reviewing antibiotics, their discovery by Florey and Chain, and the important phenomenon of antibiotic resistance.

00:00 Introduction
00:24 The Immune System
01:03 Primary Defense
02:26 Clotting Cascade
03:47 White Blood Cells
04:39 Phagocytes
05:21 Lymphocytes
06:11 Preview finished!

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[nashiggain]

thank you so much this helped so much before my exam :)