Blood physiology. Blood constituents and their functions. - презентация

1 Blood physiology

2 Blood constituents and their functions

3 Blood Consists of Plasma and Formed Elements a) If blood is centrifuged, the RBCs sink to the bottom of the tube and the liquid plasma forms the top layer. WBCs and platelets form a thin layer between the two. b) The microscopic appearance of formed elements in a smear of blood.

4 A false-color scanning electron micrograph of human red blood cells (5000×). Red blood cells

5 Structure of hemoglobin

6 Erythropoiesis: formation of red blood cells

7 Types and relative percentages of leukocytes in normal blood

8 Leukocytes

9 Blood clotting factors (procoagulants Blood clotting factors (procoagulants )

10 Processes of hemostasis a) Vascular spasm; b) Platelet plug formation; c) Coagulation.

11 Scanning electron micrograph of erythrocytes trapped in a fibrin mesh (2700 x). Erythrocytes trapped in the fibrin meshwork of a clot