Blood, Lymph & Immunity

Course Overview

The Blood, Lymph & Immunity course gives learners a clear, exam-focused mastery of the human transport and defence systems—covering blood structure and function, tissue fluid and lymph, lymphatic immunity, circulatory system types, coronary heart disease implications, the cardiac cycle, and blood vessels & transport. Instead of memorising disconnected facts, this course trains you to think in IGCSE/O Level mark-scheme language—linking structure → function → exam answers.

Using structured explanations, labelled examples, exam tips, interactive quizzes, revision-friendly audio recaps, and high-quality LearnStalk explainer videos, students will develop accurate biological understanding, strong recall, and confident application. Whether you are revising for final exams, strengthening weak topics, or aiming for top grades, this course is designed to guide you step by step—from fundamentals to high-mark responses.

What You Will Learn

• Describe the composition of blood (plasma, red blood cells, white blood cells, platelets) and explain how each component supports transport and defence.
• Explain how tissue fluid and lymph form, how substances exchange at capillaries, and why lymph must be returned to the blood.
• Understand the immune functions of the lymphatic system, including pathogens, antibodies, lymph nodes, and how defence responses protect the body.
• Compare open vs closed circulatory systems and evaluate how pressure, efficiency, and transport needs influence organism design.
• Explain coronary heart disease (CHD), its risk factors, and how reduced blood flow can affect oxygen delivery and body function.
• Master the cardiac cycle using correct sequencing (systole/diastole), valve action, pressure changes, and exam-grade explanations.
• Compare arteries, veins, and capillaries and link their adaptations (wall thickness, lumen size, valves, diffusion distance) to transport and exchange.

Why This Course Matters

Many students lose marks not because they lack knowledge, but because they struggle to use precise biological wording and to connect ideas across topics (for example: capillaries → tissue fluid → lymph → immune defence). This course solves that problem by training you to answer questions the way examiners reward: clear definitions, correct comparisons, structure-function links, and applied examples. The outcome is not “reading biology”—it is exam-ready mastery.

Course Features

• High-quality LearnStalk explainer videos built for revision
• Interactive quizzes, MCQs, and exam-style checks for understanding
• Rich concept explanations with mark-scheme wording and common mistake corrections
• Exam tips that highlight frequent trap questions and how to avoid losing marks
• Audio recaps for quick revision and reinforcement
• Flashcards for fast recall of definitions, functions, and comparisons
• Discussion prompts to strengthen understanding through explanations and peer learning

Who Is This Course For?

• IGCSE and O Level students who want clear explanations + exam performance, not memorisation alone.
• Learners preparing for tests who need to master definitions, comparisons, and structure–function questions.
• Students who find the heart, blood vessels, and immunity topics confusing and want a step-by-step revision system.
• High-achievers aiming for top grades by learning to write mark-scheme quality answers.

Course Price

$19 – Full Access