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O LevelBiologyCambridge (CIE)Revision Notes9. Human Gas Exchange9.1 Human Gas ExchangeIdentifying Intercostal Muscles

Identifying Intercostal Muscles (Cambridge (CIE) O Level Biology): Revision Note

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Identifying Intercostal Muscles

  • Muscles are only able to pull on bones, not push on them

  • This means that there must be two sets of intercostal muscles; one to pull the rib cage up and another set to pull it down

  • One set of intercostal muscles is found on the outside of the ribcage (the external intercostal muscles)

  • The other set is found on the inside of the rib cage (the internal intercostal muscles)

The lungs, IGCSE & GCSE Biology revision notes

There are 2 sets of intercostal muscles: the external, on the outside of the rib cage, and the internal, on the inside of the rib cage

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    Phil

    Author: Phil

    Expertise: Biology Content Creator

    Phil has a BSc in Biochemistry from the University of Birmingham, followed by an MBA from Manchester Business School. He has 15 years of teaching and tutoring experience, teaching Biology in schools before becoming director of a growing tuition agency. He has also examined Biology for one of the leading UK exam boards. Phil has a particular passion for empowering students to overcome their fear of numbers in a scientific context.