How to Revise Communication Topics for IB SEHS
Communication is one of the first topics students encounter in IB Sports, Exercise and Health Science (SEHS), and it forms the foundation for many later concepts. Effective revision of communication topics is essential because they appear frequently in short-answer, data-based, and extended-response questions.
Strong revision is not about memorising definitions. Instead, it focuses on understanding processes, using correct terminology, and applying ideas to exercise and performance.
Know the Core Systems First
Effective revision starts with a clear understanding of the two main communication systems:
- The nervous system
- The endocrine (hormonal) system
Students should be able to clearly explain how these systems differ in speed, duration, and method of transmission. Mixing these systems is one of the most common reasons marks are lost in exams.
When revising, always practise explaining how each system contributes to movement and exercise regulation rather than learning them in isolation.
Focus on Processes, Not Just Definitions
Communication topics are process-based. This means examiners expect students to describe sequences clearly and in the correct order.
Key processes to practise include:
- Action potential transmission
- Communication at the neuromuscular junction
- Feedback mechanisms during exercise
When revising, write step-by-step explanations using correct IB terminology. This helps ensure clarity and prevents skipping important stages in exam answers.
Use Exercise Context in Every Answer
Another common revision mistake is separating theory from application. In IB SEHS, communication must always be linked to exercise or performance.
Good revision strategies include:
