AQA GCSE Biology revision notes
Animal tissues, organs and organ systems Revision Notes
Study Animal tissues, organs and organ systems with curriculum-aligned Revision Notes resources, practice links, and exam-focused support.
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Animal tissues, organs and organ systems
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Heart (2) diagram
Specification Link
This circulation diagram is used for: Explain that the heart pumps blood around the body in a double circulatory system.
What To Explain
The heart and blood vessels work together to maintain blood flow between the lungs, body tissues and the heart.
Exam Answer Move
This links the diagram to: Explain that the heart pumps blood around the body in a double circulatory system. A strong answer follows the pathway or explains how circulation supports exchange at tissues.
Nerve Connective tissue Bundle of nerves fibers Blood vessels Single nerve fiber diagram
Specification Link
This nervous system diagram is used for: Explain that the heart pumps blood around the body in a double circulatory system.
What To Explain
Information is passed through the nervous system so the body can coordinate a response.
Exam Answer Move
The mapped objective is: Explain that the heart pumps blood around the body in a double circulatory system. The answer should connect structures such as receptors, neurones, synapses or effectors to coordination and response.
Stomach Duodenum Fundus Esophagus Body Pyloric Den Pylorus diagram
Specification Link
This digestive system diagram is used for: Explain how bile neutralises stomach acid and emulsifies fats to increase the rate of fat digestion.
What To Explain
Digestive organs and enzymes break large insoluble food molecules into smaller soluble molecules that can be absorbed.
Exam Answer Move
This is tied to: Explain how bile neutralises stomach acid and emulsifies fats to increase the rate of fat digestion. The learner should explain digestion, enzymes or absorption.
Digestive system 22 diagram
Specification Link
This digestive system diagram is used for: Explain that digestive enzymes convert large insoluble food molecules into small soluble molecules that can be absorbed into the blood.
What To Explain
Digestive organs and enzymes break large insoluble food molecules into smaller soluble molecules that can be absorbed.
Exam Answer Move
This is tied to: Explain that digestive enzymes convert large insoluble food molecules into small soluble molecules that can be absorbed into the blood. The learner should explain digestion, enzymes or absorption.
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