Term
| Name three components of bood. |
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Definition
| Plasma/ White BC/ Red BC/ |
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Term
| State the function of red blood cells. |
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Definition
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Term
| State three features of red blood cells that make them specialised for their function. |
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Definition
| function = Carry oxygen: Biconcave shape / no nucleus/ contain haemoglobin |
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Term
| What is formed when haemoglbin binds to oxygen? |
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Definition
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Term
| State the function of white blood cells. |
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Definition
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Term
| State the term for a disease cuasing micro-organism. |
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Definition
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Term
| Give thre examples of pathogens. |
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Definition
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Term
| Describe the action of a phagocyte. |
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Definition
| Phagocytosis-engulfing and destroying pathogens |
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Term
| Describe the action of a lymphocyte. |
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Definition
| Produces antibodies which destroy pathogens |
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Term
| Name the two types of white blood cell. |
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Definition
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Term
| What is special about antibodies? |
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Definition
| antibodies are specific to a particular pathogen |
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Term
| Which side of the heart contains oxygenated blood? |
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Definition
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Term
| Which side of the heart contains deoxygenated blood? |
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Definition
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Term
| What is the purpose of the valves in the heart? |
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Definition
| To prevent backflow of blood. |
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Term
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Definition
| Largest artery, takes blood from the left ventricel to the body |
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Term
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Definition
| Largest vein takes blood from the body to the right atrium |
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Term
| What is the function of the pulmonary artery? |
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Definition
| Carries deoxygenated blood from the right ventricle to the lungs |
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Term
| What is the function of the pulmonary vein? |
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Definition
| Carries oxygenated blood from the lungs to the left atrium |
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Term
| What are atria of the heart? |
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Definition
| Two upper heart chambers which recieve blood returning to the heart |
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Term
| Which chambers pump blood out the heart? |
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Definition
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Term
| Name the arteries that supply heart muscle with blood. |
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Definition
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Term
| describe the positions of the heart valves (4) |
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Definition
| two are between the atria and ventricles; two are in the arteries leaving the ventricles |
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Term
| Name the type of blood vessels that have thick muscular walls. |
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Definition
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Term
| Name the type of blood vessels that carry blood at high pressure. |
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Definition
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Term
| Describe the blood pressure in veins. |
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Definition
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Term
| Name the type of blood vessels that have thin walls and valves. |
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Definition
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Term
| Give two features of capillaries that allow efficient exchange of materials. |
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Definition
| they are thin walled and have a large surface area. |
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Term
| Give 2 examples of materials that can diffuse across capillaries into or out of the blood. |
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Definition
| CO2 / O2/urea/glucose / amino acids |
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