AP BIOLOGY

Detailed explanation-1: -The mechanism of hemostasis can divide into four stages. 1) Constriction of the blood vessel. 2) Formation of a temporary “platelet plug.” 3) Activation of the coagulation cascade. 4) Formation of “fibrin plug” or the final clot.

Detailed explanation-2: -Primary hemostasis is when your body forms a temporary plug to seal an injury. To accomplish that, platelets that circulate in your blood stick to the damaged tissue and activate. That activation means they can “recruit” more platelets to form a platelet “plug” to stop blood loss from the damaged area.

Detailed explanation-3: -Hemostasis involves three basic steps: vascular spasm, the formation of a platelet plug, and coagulation, in which clotting factors promote the formation of a fibrin clot. Fibrinolysis is the process in which a clot is degraded in a healing vessel.

Detailed explanation-4: -Primary Haemostasis: 1) local vasoconstriction (to reduce blood flow to the injury site), 2) platelet plug formation. Secondary Haemostasis or clotting of the plasma, involving interaction between numerous factors and inhibitors.

Detailed explanation-5: -Electrocautery. Electrocauterization, developed in the 1930s, has been one of the most common hemostatic techniques because of its low cost, accessibility, ease of use, and effectiveness.