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14 Cards in this Set
- Front
- Back
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What is transported by the circulatory system?
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blood, nutrients, waste, fluids, antibodies
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What does blood consist of?
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Plasma (water), white and red blood cells, platelets
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How much blood in our bodies?
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5L
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How much blood can we lose before it's potentially fatal?
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40%
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What is the heart?
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A muscular pump made of cardiac muscle
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What are the 4 main chambers of the heart?
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2 top atria, 2 bottom ventricles
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Describe the flow of blood from body through heart back to body
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Deoxygenated blow comes into Right atrium, then right ventricle and pumped to lungs for oxygen. Then, O2 rich blood comes into heart via left atrium, pumped to body via left ventricle
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What is referred to as the "pacemaker of the heart"?
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The Sino-Atrial Node (SA Node)
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What controls blood pressure?
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Hypothalamus, ANS, baro-receptors
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What are the terms for pumping/resting? (i.e. 120/80)
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Systolic and Diastolic
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What is it called when the heart is too fast or too slow?
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Arrythmias
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What is it called when Heart Beat is irregular?
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Fibrillation
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What causes a heart attack?
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blockage of blood flow to the heart
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How to Automatic External Defib work?
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detects if beating, if not, shocks and resets SA node (heart)
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