Font Paragraph Styles When a clinician spins a sample of blood in the centrifuge

Question

Font Paragraph Styles When a clinician spins a sample of blood in the centrifuge, it separates into a plasma layer which is which is the present in the blood sample. The buffy coat region is where you can find 1. % of whole blood and a packed cell volume layer % of whole blood. Another name for the packed cell volume is 19 and it indicates the relative number of red blood cells and 2 Which of the following is the original stem cell that all white blood cells, red blood cells, and platelets derive from? (a) Myeloid stem cell (b) Erythroblast (c) Hemocytoblast (d) Lymphoid stem cell 3. Granulocytes (e g. neutrophils, eosinophils, and basophils) are descendents of the lymphoid stem cell (a) True (b) False 4. In response to low blood pressure and/or sodium concentrations in the bloodstream, the kidney secretes renin which converts into (a) Angiotensin II, Angiotensin I (b) Angiotensinogen, Angiotensin I (c) Angiotensin I. Angioteisnogen

Explanation / Answer

1. Blood is a mixutre of plasma nad blood cells. Of which plasma occuapies 55 percent and blood cells occupaies 45 percent. These blood cells is called packed cell volume and it is also reffered as hematocrit.

The buffycoat where it contains leukocytes and platelets is present between the plasma and erythrocytes.

2. The answer is myeloid stem cell. It produces megakryocytes, erythrocytes, mast cells, myeloblasts. Basophyll, neutrophyll, eosinophyll and monocytes will be derived from myeloblast cells.

3. The answer is False. because Basophyll, neutrophyll, eosinophyll and monocytes will be derived from myeloblast cells not from lymphoid stem cell.

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