Maintenance by Platelets Class 10

Maintenance by Platelets- Blood Clotting

Blood clotting is a mechanism that prevents the loss of blood from the site of an injury or wound by forming a blood clot.

In case of any injury when bleeding occurs, loss of blood from the system has to be minimized. Bleeding  leads to a loss of pressure which reduces the efficiency of the pumping system.

To prevent this, blood has platelet cells which circulate around the body and form a mesh-like network or clot at the site of injury.

Also Check – Explain the Process of Blood Clotting

ALso Check- Functions Of Blood

Maintenance by Platelets

3 Steps of Maintenance By Platelets to form a Clot

Platelets form a clot in 3 steps

Also Check – Composition Of Blood

Adhesion

Platelets reach the site of injury and become sticky, sticking to the borders of the wound.

Activation

Platelets then change their shape and start secreting chemicals to attract more platelets to the injury site.

Aggregation

Platelets connect to each other and form a plug which prevents blood from flowing out.