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CARDIOVASCULAR SYSTEM, TERMS, IMG_0082 - Coggle Diagram
CARDIOVASCULAR SYSTEM
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CARDIAC CYCLE
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- ATRIAL SYSTOLE: atria contract, ventricles relax (diastole), blood flows into ventricles
- VENTRICULAR SYSTOLE: atria contract, ventricles relax (diastole), blood flows into ventricles
- CARDIAC DIASTOLE: heart relaxes, prepares to refill
ISOVOLUMENTRIC RELAXATION: AV & SL valves closed, no change in blood amount, marks beginning of diastole
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BLOOD VESSELS 3 types
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CAPILLARIES
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TYPES
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FENESTRATED
Tiny pores (macromolecules) along length, allow for larger molecules to move from BLOOD to TISSUE
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SINUSOIDAL
Discontinuous, large gaps for larger cells to pass through
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THIN - ALLOW FOR DIFFUSION - oxygen, nutrients
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TERMS
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BRADYCARDIA
Rapid or irregular, out of fase heart contractions
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HEART PALPITATIONS
Heartbeat = strong, fast, irregular
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