The heart is a vital organ in the double circulatory system, functioning as an efficient pump that maintains continuous blood flow throughout the body. The system consists of two distinct circuits - pulmonary and systemic - working together to ensure optimal oxygen delivery to tissues.
• The human heart contains four chambers divided into right and left sides, with the right side managing deoxygenated blood flow to the lungs and the left side handling oxygenated blood distribution to the body.
• Heart valves ensure unidirectional blood flow, preventing backflow and maintaining efficient circulation.
• The ventricle walls vary in thickness based on their specific functions, with the left ventricle being the thickest to generate sufficient pressure for systemic circulation.
• The cardiac muscle tissue is specially adapted for continuous operation without fatigue.
