Section Two Key Terms Vocabulary

the Dissolution breakdown of Red Blood Cells , and the release of their hemoglobin and other substances , into the plasma

accumulation of blood that has collected in the tissue surrounding the vein

increased proportion of formed elements to plasma caused by tourniquet being left on for too long

Using a too small needle for a relatively bigger vein Pulling a syringe plunger too rapidly Expelling blood vigorously into a tube Shaking a tube of blood too hard .

When isolated on its own, blood plasma is a light yellow liquid, similar to the color of straw. Along with water, plasma carries salts and enzymes. The primary purpose of plasma is to transport nutrients, hormones, and proteins to the parts of the body that need it.

all the same substance as a plasma , exempt for the coagulation protein , which are left behind in the blood clot .

"instantly/immediately

separator gel, or clot activator, added to a blood collection tube. anticoagulant. substance that prevents blood from clotting.

The buffy coat is the fraction of an anticoagulated blood sample that contains most of the white blood cells and platelets following density gradient centrifugation of the blood.

Barrier between the Serum and the Cells

Blood clots when the coagulation factors within the plasma are activated . Blood starts to clot almost immediately after it is drawn unless it is drawn unless it is exposed to an anticoagulant . Clots within the blood specimen , even if not visible to the naked eye, will yield inaccurate results.

Inadequate mixing of blood and anticoagulant Delay in expelling blood within a syringe into a collection tube .