3-28 blood clot test PDF

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1. Describe the three phases of the normal blood-clotting process as it happens in Hayden, when she cuts her finger making salad for dinner. a. This is hemostasis with 3 phases. The first phases is vasoconstriction so the middle layer of veins contract decreasing blood flow. Next platelets form. This is when the sticky platelet plug forms and adhere to the. Last is coagulation. This is when thrombin turns fibrinogen into fibrin. Fibrin is an insoluble clotting protein. It forms a mesh and clots the blood. 2. How does the body produce erythrocytes (red blood cells) in Alex? 1.Which situation do you predict to prompt the release of more erythropoietin into the blood: anemia or polycythemia? Explain. a. To trigger this the body needs to interrupt homeostasis. A situation could be Alex is running a race and he is huffing and puffing; he is out of breath. This is the stimulus. When this occurs the kidney releases erythropoietin. This hormone stimulates red bone marrow. The red bone marrow begins producing red blood cells therefore the O2 carrying ability of blood increases. 3. Explain the antigen-antibody response as it relates to blood groups. a. Blood groups have RBC antigens. Type AB has A and B antigens therefore it is the universal recipient. Type B blood only has B antigens so A is foreign. Since A is foreign type B blood cannot receive type A blood. If Type B receives type A blood the body will identify it as a foe and the body will respond drastically. If...