BIOL-2230 Lecture Notes - Lecture 7: Vasospasm, Megakaryocyte, Fibrin
23 Feb 2017
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Iron from our diet: stored as ferritin and hemosiderin in cells, transported in blood as transferring. B vitamins: especially b12 and folic acid. Body decomposes them and recycles components: heme is split from globin; iron is bound to proteins and stored, bilirubin is produced. -monocytes: hemocytoblast to myeloid stem cell, hemocytoblast divides, myeloid stem cell to monoblast, monoblast is first committed cell in this process, monoblast to promonocyte, promonocyte to monocyte, monocyte leaves bone marrow to go to lymph tissues. -lymphocytes: hemocytoblast to lymphoid stem cell, hemocytoblast divides, lymphoid stem cell is first committed cell in this process, lymphoid stem cell to lymphoblast, lymphoblast to prolymphocyte, prolymphocyte to lymphocyte, lymphocyte leaves bone marrow and goes to lymph tissues. Platelet function: vascular spasm, platelet plug, coagulation, intrinsic or extrinsic pathway. Platelets have contractile proteins that cause them to contract and thus squeeze out serum to compact a clot. This pulls the vessel"s ruptured edges closer together.
