Edexcel GCSE Combined Science, topic 7
Animal coordination, control and homeostasis
Hormones are chemical messengers that coordinate what happens in the body. This topic looks at the glands that make them, how they control the menstrual cycle and blood glucose, and how the body keeps its internal environment constant. Triple Biology also covers temperature control and the kidneys.
Revision notes
Worksheet
FlashcardsSubtopics
Work through them in order. Each one has notes, exam questions and flashcards, and a PDF of each. Triple-only subtopics are left out.
- 1Hormones and the endocrine system Spec 7.1–7.3Where hormones are made and how they travel, plus adrenalin and thyroxine (Higher tier).NotesQuestions 4Flashcards 14
- 2The menstrual cycle and fertility control Spec 7.4–7.8The stages of the menstrual cycle, the hormones that control it, contraception, and IVF and clomifene.NotesQuestions 5Flashcards 16
- 3Homeostasis and temperature control Spec 7.9–7.12BWhy the body keeps its internal environment constant, and how the skin and brain control body temperature.NotesQuestions 5Flashcards 14
- 4Blood glucose and diabetes Spec 7.13–7.17How insulin and glucagon control blood glucose, the two types of diabetes, and how BMI and waist:hip ratio are used.NotesQuestions 5Flashcards 12
Not in Combined Science: The urinary system and the kidneys.
Whole topic
When you have done the subtopics: test yourself on everything, or print the lot.