There are some BBC Bitesize revision pages that could be useful.
- How do human bodies respond to changes inside them and to their environment? [Part 1] [Part 2]
- What can we do to keep our bodies healthy?
- How do we use/abuse medical and recreational drugs?
- What causes infectious diseases and how can our bodies defend themselves against them?
Defending against infection Part 1: Play Now | Play in Popup | Download Defending against infection Part 2: Play Now | Play in Popup | Download Diet & Exercise Part 1: Play Now | Play in Popup | Download Diet & Exercise Part 2: Play Now | Play in Popup | Download Drugs & Health Part 1: Play Now | Play in Popup | Download Drugs & Health Part 2: Play Now | Play in Popup | Download Hormones Part 1: Play Now | Play in Popup | Download Hormones Part 2: Play Now | Play in Popup | Download The Nervous System: Play Now | Play in Popup | Download
