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19 Cards in this Set
- Front
- Back
heart structure |
chambers: top atria = gather blood from the body or lungs bortom ventricles = pump vlood on to the body or lungs |
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valves |
prevent backflow of bloodd |
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main vessel summary |
1. vena cava - carries deoxygenated blood back from the body 2. pulmonary artery - carries deoxygenated bloos to the lungs 3. pulmonary veins - brings oxygenated blood back from the lungs 4. aorta - artery carrying oxygenated blood to the body |
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coronary artery |
supplies the heart muscle itself with oxygenated blood. |
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blood flow through the heart |
body - vena cava - right atrium - right ventricle - lungs - pulmonary vein - left atrium - left venrricle - aorta - body |
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blood |
- plasma (yellow fluid) - red blood cells -white blood cells |
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plasma |
- yellow fluid - transports dissolved nutrients such as glucose and amino acids around the body - transports red blood cells and white blood cells |
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red blood cells (RBC's) |
- contain protein Haemoglobin haemoglobin helps RBC's transport o2 around the body - biconcave in shape and have no nucleus - this means they can transport o2 effecientlt in the form of oxyhaemoglobin |
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oxyhaemoglobin |
OXYGEN(picked up in the lungs) - HAEMOGLOBIN = OXYHAEMOGLOBIN (taken to body) |
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white blood cells (WBC's) |
- part of the immune system - involved in destroying pathogens - 2 examples of WBC's are Phagocytes and Lymphocytes |
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phagocytes |
carry out phagocytosis by engilfing pathogens once the phagocyte has engulfed the oathogen it destroys it by digesting the pathogen. |
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Lymphocytes |
some lymohocytes produce antibodies which destroy pathogens each antibody is specifix to a particular pathogen |
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blood vessels |
blood is pumped around the body by the heart and blood vessels. THREE TYPES OF VESSEL: arteries, veins, capillaries |
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arteries |
- carry blood away from the heart - thick wall to withstand the high pressures - it has a pulse |
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veins |
- carry blood to the heart - thinner wall with lower pressures - has valves |
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capillaries |
-allows materials to move out of them and into body cells- 1celled thick walls to allow materials to get in and put easilt -materials are small and soluble, such as: o2, glucose, xo2 and h2o |
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absorption of materials |
- o2 and nutrients from digested food must be absorbed into the bloodstream- the bloodstream then delivers the small soluble molecules to body cells for respiration |
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absorption of materials |
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