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12 Cards in this Set
- Front
- Back
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List the five types of Blood Vessel |
- Artery - Capillary - Vein - Arterioles - Venules |
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Which Vessel will be best designed for Gaseous exchange? Describe how this vessel is designed for gaseous exchange. (2Marks) |
- Capillary - One cell thick |
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Describe how an artery is well designed to carry blood away from the heart. (3 marks) |
- Muscles - Elastic Fibres - Fibrous Tiessue |
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How many blood cells are there? |
- Red Blood Cells - White Blood Cells - Platelets |
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What is another name for Erythrocytes and what is it’s function? (2 Marks) |
- Red Blood Cells - Carry oxygen |
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What is another name for Leucocytes and what is it’s function? (2 Marks) |
- White Blood Cells - Fight infection |
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What is another name for Thrombocytes and what is it’s function? (2 Marks) |
- Platelets - Allows blood to clot |
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Which type of vessel will typically carry blood back towards the heart? (4 marks) |
Vein |
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A patient has lost pressure in their pulmonary artery. What will be the effect ? ( 2marks) |
Lack of blood flow to the lungs. Decreased oxygenation of the blood |
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What is the function of the Chordae Tendinae? Which muscle acts with this? (2 marks) |
- Closes the tricuspid valve - Capillary muscle |
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Explain in depth how Deoxygenated Blood travels and where it travels to. (20 marks) |
Deoxygenated blood is pumped to the lungs. ( 1 Mark) 1. DEOXYgenated blood enters the RIGHT ATRIUM of the heart from the UPPER body and HEAD in the SUPERIOR VENA CAVA and from the LOWER body in the INFERIOR VENA CAVA at relatively LOW PRESSURE . (7marks)
2. As blood flows in, slight PRESSURE BUILDS UP, until the ATRIO-VENTRICULAR VALVE (TRICUSPID VALVE) opens to let blood pass into the RIGHT VENTRICLE. (4 marks)
3. When both the ATRIUM and VENTRICLE are filled with blood, the ATRIUM CONTRACTS, forcing all the blood into the RIGHT VENTRICLE. (2 marks)
4. As the right ventricle starts to CONTRACT, the TRICUSPID VALVE closes, preventing any back flow of the blood to the ATRIUM. (2 Marks)
5. The right ventricle contracts fully and pumps DEOXYgenated blood through the SEMILUNAR VALVES into the PULMONARY ARTERY. (3 marks)
6. The pulmonary artery transports blood to the CAPILLARY BEDS of the LUNGS. ( 1 mark) |
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What is the function of the semilunar valves? |
Prevent the back flow of blood to the heart |
