Human Infection and Response-The Barriers to Infection

Question 1

What are the 4 ways pathogens can enter your body?

Answer 1

Droplet infection, direct contact, contaminated food and drinks, break in your skin.

Question 2

What will a pathogen do if it enters your body?

Answer 2

It will reproduce and make toxins.

Question 3

Barrier- The Skin

Answer 3

Skin covers the entire body and acts as a barrier to your vulnerable tissues underneath.

Question 4

Barrier- Platelets

Answer 4

If you damage or cut your skin, platelets in your blood quickly forms a clot which dries into a scab, acting like a seal for pathogens.

Question 5

Barrier- Mucus

Answer 5

When you breathe, you draw in lots of pathogens into your body but your body produces mucus in the lining of the lungs and tubes. This traps pathogens and is forced out your body.