systemic circulation
Medical term Routine Blood Collections
Blood flow from the left ventricle through the arteries to the body's tissues and back through the veins to the right atrium.
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Related terms
- atriumAn upper heart chamber. The right one collects blood coming back from the body; the left one collects…
- ventricleOne of the two lower heart chambers: the right pumps blood to the lungs, the left to the rest of the body.
- sodium citrateAnticoagulant that binds calcium, used in light blue-top tubes for coagulation tests. Fill to the line to…
- sphygmomanometerA blood pressure cuff with a gauge. It can serve as a tourniquet when inflated to just below the patient's…
- syncopeFainting: brief loss of consciousness when too little blood reaches the brain. If it starts during a draw…
- syringeBarrel and plunger used with a needle or winged set, often for small or fragile veins; a 1 to 5 mL syringe…
- systolic pressureThe upper blood pressure number: the peak pressure in the arteries while the ventricles contract.
- thrombinClotting enzyme that turns fibrinogen into fibrin. Orange-top tubes use a thrombin-based clot activator to…
- thrombusA blood clot formed inside a vessel. A thrombosed vein feels hard or cordlike and is not used for…
- tourniquetBand tied 7 to 10 cm (3 to 4 in, about 4 to 5 finger widths) above the site to slow venous return so veins…