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31 Cards in this Set
- Front
- Back
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internal system of transport, (reaches every part of body), transports oxygen IN and carbon dioxide OUT distributes nutrients to cells and transports wastes to disposal sites?
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Circulatory System
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blood pumped through open-ended vessels?
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Open System
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fluid that surrounds cells?
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Interstitial Fluid
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blood is confined to vessels, veins return blood to the heart?
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Closed System
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What are the 3 main types od blood vessels?
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1. arteries
2. veins 3. capillaries |
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carry blood away from heart, not always oxygenated. (to lungs-blue+deoxygenated) (to body-red=oxygenated)
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arteries
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carry blood to the heart, (from lungs=red) (from body=blue)
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veins
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thin layer of endothelial cells. (this so everything can easily flow through it) (vessels in between veins and arteries)
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capillaries
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veins branch off into smaller _________ ?
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venules
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arteries branch off into smaller __________ ?
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arterioles
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what are the 3 layers of a capillary?
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1. internal epithelium (inner)
2. smooth layer (middle) 3. connective tissue w/ elastic fibers (outer) |
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what flows into and out of a capillary?
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nutrients and O2 go out into the cell and waster goes from the cell into the capillary.
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what are the 3 main ways the exchange of substances occur @ the capillary beds?
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1. simple diffusion (O2 & CO2)
2. Endocytosis(in the cell) Exocytosis (out of ceel) 3. Capillary walls are leaky(molecules can move to go out capillary into interstical fluids. sugars & salts) |
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pushes fluid out of vessels?
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blood pressure
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pushes fluid into vessels?
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osmotic pressure
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heart contracts and relaxes?
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cardiac cycle
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heart is relaxed, blood can flow into the atrium & ventricle (right to left)
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Diastole
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a brief comtraction of the atrium, which fills the vertricles and the ventricles contract and blood goes out throught the arteries?
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Systole
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sets tempo for the heart?
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pacemaker
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right atrium electrical signal starts?
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SA- sinoatrial node
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atrial ventricular node, contracts
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AV node
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bottom of the heart, electrical starts
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Apex
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reading electrical signal of the heart?
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elctrocardiogram
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amt. of blood the left ventricle pumps, amt of pumps per minute, amt of blood pumped each time the left ventricle contracts?
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cardiac output
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force that blood exerts agains the walls of our blood vessels?
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blood pressure
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what are the 2 main componets of blood?
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1. plasma
2. several types of cells |
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liquid part, 55%, contains H2O, salts, plasma proteins & substances transported by blood?
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plasma
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45%, contains, erythrocytes, leukocytes, and platelets?
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several types of cells
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transports oxygen, (contains hemoglobin?
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RBC's Erythrocytes= red blood cells
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5 main types, function is defence & immunity. fight infection?
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WBC Leukocytes= white blood cells
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fragements of cells, function = blood clotting. seals blood vessels when they get cut.
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platelets
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