The Human Body Major Systems & Organs - How The Skin Protects Us

The human body is a wondrously complex machine made of flesh, bone, muscles, organs, blood vessels and highly specialized systems that function together to sustain life. This fascinating third part of The Human Body series examines the incredible "machine," from simple cells, to DNA, the body's building blocks of life, to the major systems and organs. This video explains how when we cut ourselves or damage our skin this puts our body at risk of bacteria entering so the skin responds by attacking the bacteria which can cause redness or pain. The Human Body: Major Systems & Organs. Part 8