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Defences Against Pathogens (AQA GCSE Combined Science: Synergy: Life & Environmental Sciences): Revision Note

Exam code: 8465

Ruth Brindle

Written by: Ruth Brindle

Reviewed by: Lára Marie McIvor

Updated on

Non-Specific Defences

  • The human body has a number of mechanisms that are the first line of defence against an infection

  • The non-specific defence systems of the human body against pathogens include:

    • The skin

    • The nose

    • The trachea and bronchi

    • The stomach

Body Physical Defences, downloadable IGCSE & GCSE Biology revision notes

The different mechanisms can be divided into biochemical and physical defences

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Author
Reviewer
Ruth Brindle

Author: Ruth Brindle

Expertise: Biology Content Creator

Ruth graduated from Sheffield University with a degree in Biology and went on to teach Science in London whilst also completing an MA in innovation in Education. With 10 years of teaching experience across the 3 key science disciplines, Ruth decided to set up a tutoring business to support students in her local area. Ruth has worked with several exam boards and loves to use her experience to produce educational materials which make the mark schemes accessible to all students.

Lára Marie McIvor

Reviewer: Lára Marie McIvor

Expertise: Biology, Psychology & Sociology Subject Lead

Lára graduated from Oxford University in Biological Sciences and has now been a science tutor working in the UK for several years. Lára has a particular interest in the area of infectious disease and epidemiology, and enjoys creating original educational materials that develop confidence and facilitate learning.