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Structure and Function of the Cardiovascular System

Micro lesson

Kate Piper

on 15 October 2012

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Transcript of Structure and Function of the Cardiovascular System

The Cardiovascular System P5 - Describe the structure and function of the cardiovascular system - Btec Diploma Level 3: Unit 1 The basics of the CV system
• The type of muscle used
• Two types of circuit
The Heart and Vessels
• Structure and key words
• Direction of blood
• Arteries, arterioles, capillaries, venuoles and veins
Function of the Cardiovascular system 3 types of muscles in the body
• Voluntary, involuntary and cardiac

> What type of muscle is the heart?

Two Circuits
• Pulmonary
• Systemic

The myth... Superior Vena Cava - deoxygnated blood
Upper body Right Atrium Aorta - oxygenated blood
Left Ventricle The Body Pulmonary Artery - deoxygenated blood
Right Ventricle The Lungs Pulmonary Vein - oxygenated blood
The Lungs Left Atrium Inferior Vena Cava - deoxygenated blood
The Lungs Left Atrium Right Atrium Right Ventricle Left Atrium Left Ventricle Arteries Carry blood away from the heart Arterioles Capillaries Capillaries bring blood within reach of every cell in the body. One cell thick. Venuoles Veins Carry the blood back in to the heart Mitral Valve can also be referred to as Bicuspid Valve

Pulmonary and Aortic Valves can also be referred to as semi-lunar Valve. The Valves The Vessels Function of the Cardiovascular System Delivery of oxygen and nutrients

Removal of waste products

Thermoregulation Vasodilation and vasconstriction of the blood vessels Function of the blood Oxygen transport


Fighting Infection The blood carries white blood cells - they are used to fight infection at its source, repairs damaged tissue after injury and destroys bacteria. The blood carries platelets. They are in charge of clotting The blood carries red blood cells around the body. In these cells are haemoglobin. Oxygen attaches itself to haemoglobin (oxyhaemoglobin) at the lungs and is then transported to the working muscles of the body.
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