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9 Cards in this Set
- Front
- Back
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what is the circulatory system? |
-respoinsible for delivering oxygen and nutrients to bodies tissue -removes co2 and waste from tissues -composed of: heart, arteries, veins, capillaries, an blood |
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heart |
-hollow organ, size of fist -in lower left central region of chest between lungs -protected by sternum and ribs(front) -back-protected by spinal coloumn -veins carry blood back to the heart -arteries carry blood away from the heart -capillaries allow exchange of gases and nutrients between blood and cells |
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how does the heart work? |
left side: recieves oxygenated blood from lungs an pumps it to all parts of body
right side: recieves blood from body then pumps it to the lungs to be re-oxygenated
60-80 beats per minute |
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response to blood loss |
-adults- 1L is serious -children- 500ml is serious - how serious it is: - size of blood vessel -whether blood is flowing from artery or vein -external or internal -age, weight -considered serous when pulse quickens, level of consciousness, breath rate increases, an blood pressure drops |
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external bleeing |
on the outside (3)
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arterial bleeding |
- bright red, spurting form wound - red because its rich in oxygen - spurting goes with patients pulse of heart |
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venous bleeding |
-dark red blood, flows steadily - dark red cause it has little to no oxygen |
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capillary bleeding |
dark red, oozes slowly, damaged capillaries |
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distribution of blood |
capillaries-7% arteries-11% veins-61% heart-3% lungs-18% |
