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Systems that Protect the Body. How do they work together to keep us safe?. Immune system. Integumentary system. These help to protect our bodies. There are other systems that protect the body?. The respiratory and digestive system! . How do these other systems protect us?.
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Systems that Protect the Body How do they work together to keep us safe?
Immune system • Integumentary system These help to protect our bodies
There are other systems that protect the body? The respiratory and digestive system!
How do these other systems protect us? (Answer to question 1 now follows)
Protection from the digestive system • The saliva destroys some germs • Acids and enzymes in the stomach destroy other pathogens Pathogen is any living or no living structure that can causes disease.
Protection from the respiratory system • Mucus traps the dirt and germs • Cilia (hair like structures) filter and clean the air Cilia in the Respiratory tract
How does the Integumentary and the Immune systems protect us?
What are the parts of the immune system? • Cells- white blood cells such as T and B cells • Tissue- the lymph nodes and the thymus gland • Organs- Spleen
How does the immune system work? 2. A non-specific response is produced • At the site of a cut/ wound histamine is released • Histamine increases temperature of the tissue • Increase temperature leads to increase blood supply to the wound • Increase blood flow brings more white blood cells to the wounded tissue • These white blood cells then attack any pathogen at the site of the cut.
What are parts of this system? • Hair • Nail • Skin
Why is the skin important • It protects us from elements of the weather • It protects our the internal organs • It protects us from danger . We can sense our environment (feeling and touching) • It helps control our body temperature which ensures that our internal organs are protected
Parts of the skin See page B 84 of the textbook