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Human Heart & Circulation Notes PDF with Diagram | Quick Biology Exam Revision (A/AS Level)

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This document provides premium, easy-to-understand notes on the Human Heart and Circulation, designed for fast learning and high exam performance. Covers structure of the heart and blood flow Explains pulmonary and systemic circulation Includes labeled diagram for visual understanding Simple and clean format for quick revision Exam-focused key points for better scores Perfect for students preparing for school exams, A/AS level biology, and competitive exams. Ideal for last-minute revision and quick understanding.

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Human Heart & Circulation – Biology Notes
High-Scoring | Clean Design | Exam Ready Content



✨ Overview

These notes provide a clear and structured explanation of the human heart and circulation
system, designed for quick revision and high exam performance.


1. Structure of the Human Heart

The human heart has four chambers:
• Right Atrium
• Right Ventricle
• Left Atrium
• Left Ventricle


2. Blood Flow in the Heart

Body → Right Atrium → Right Ventricle → Lungs → Left Atrium → Left Ventricle → Body


3. Types of Circulation

• Pulmonary Circulation – Between heart and lungs
• Systemic Circulation – Between heart and body


4. Functions of the Heart

• Pumps blood throughout the body
• Supplies oxygen and nutrients
• Removes carbon dioxide and waste

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