Immune Response. 2
Storyboard Text
- IA
- 1st Line of Defence
- The surface barriers that prevent the entry of pathogens into the body. Some examples include skin and mucous membranes. They act as a net to catch pathogens as they enter the body
- LINES OF DEFENSE
- IA
- Group of cells, tissues and organs that work together to protect the body; the immune system. Examples include blood clotting, inflammation, fever and phagocytosis. The aim is to seek and destroy pathogens inside the body.
- 2nd Line of Defence
- LINES OF DEFENSE
- IA
- This is the specific immune response. The specific immune response creates antibodies. Specific antibodies are produced to combat the pathogens. The aim is eliminating specific pathogens that have been previously encountered by the immune system.
- 3rd Line of Defence
- LINES OF DEFENSE
- 3rd Line of Defence
- This is the specific immune response. The specific immune response creates antibodies. Specific antibodies are produced to combat the pathogens. The aim is eliminating specific pathogens that have been previously encountered by the immune system.
- LINES OF DEFENSE
- How is each line alerted?
- IA
- Tears can be alerted from infection or inflammation such as conjunctivitis. The first line of defence is alerted by producing a transparent membrane that lines your eyelid
- Pathogens entering through the nose such as the common cold, the body will produce a mucus to attempt to kill the pathogen & remove it from the body
- 1st LINE OF DEFENSE
- How each line is alerted & the effect
- Hair in the nose and ears and around the eyes- a natural barrier to stop airborne pathogens from entering the body
- Wax is secreted by glands, an infectious disease such as swimmers ear would alert the first line of defence by producing wax to minimise the amount of moisture in the ear
- Blood clotting - stopping additional infection through skin damage such as damaging the still by a cut
- A fever heats up the body and destroys pathogens that cannot survive in extreme heat
- 2nd LINE OF DEFENSE
- How each line is alerted & the effect
- Inflammation increases the amount of blood reaching an infected area in the body
- Phagocytosis - the large white bloods cells enveloping pathogens and destroying them via enzymes
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