Anatomy and Cell Biology 3309 Lecture Notes - Lecture 20: Glycogen, Megakaryocyte, Uvea
28 Dec 2017
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Document Summary
Formed element: anything that can be seen under a microscope. Blood is connective tissue: same derivations embryologically as the other forms of connective tissue, connects the body. Blood sample is taken, put into a test tube and spun it down in a centrifuge: If an anti-coagulant is not added, a blood clot forms: blood clot contracts and squeezes out a fluid called serum. If blood is put into a test tube and left for 5 hours: blood squeezes out yellow serum. Serum: plasma with all of the clotting factors removed. Can isolate antibodies from blood by collecting serum. If blood is put into a test tube with anti-coagulant (heparine or compound that chelates calcium like edta), clotting cannot occur. Hematocrit: ratio of plasma:rbcs: measurement to see the health of the blood, 45% of blood should be rbcs, lower in women than men, can vary depending on health and age.
