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Syllabus

The Circulatory System — Syllabus

ICSE · Class 8 · Biology

What The Circulatory System covers in ICSE Class 8 Biology: 4 topics, for the 2026-27 session. Part of the ICSE Class 8 Biology syllabus.

62 questions42 flashcards5 concepts

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4 Topics · ICSE Class 8 Biology · 2026-27

Topics in The Circulatory System

1

1. Human Circulatory System

  • The circulatory system includes the heart, blood, and blood vessels.
  • Blood carries nutrients, oxygen, carbon dioxide, and wastes throughout the body.
  • Lymph also helps in transport in the body.
2

2. Heart: Structure and Working

  • The heart is a muscular pumping organ.
  • It weighs about 225-340 grams and is about the size of a folded fist.
  • It is located in the centre of the chest cavity, with its tip tilted slightly to the left.
3

3. Blood Vessels

  • Blood vessels form a network of tubes that carry blood throughout the body.
  • There are three main types of blood vessels: arteries, veins, and capillaries.
  • Arteries carry blood away from the heart.
4

4. Blood Circulation and Double Circulation

  • Blood enters the right atrium from the body through the vena cavae.
  • Blood enters the left atrium from the lungs through the pulmonary veins.
  • The right atrium sends deoxygenated blood to the right ventricle.

Key Concepts

Central concept: Human circulatory system as a transport system of blood and lymph

HeartBlood vesselsBlood circulationDouble circulationLymphatic systemBlood groupsHeart-related conditionsBlood donation and blood banks

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Frequently Asked Questions

What are the important topics in The Circulatory System for ICSE Class 8 Biology?
Key topics in The Circulatory System include Human Circulatory System, Heart: Structure and Working, Blood Vessels, Blood Circulation and Double Circulation. Study these first, then practise questions on each for Class 8 exams.
How should I revise The Circulatory System for Class 8 exams?
Learn the core ideas first, then work through the 62 practice questions on The Circulatory System. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All ICSE Class 8 Biology Syllabus

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