thrombocytes

Question 1

how is a blood clot formed?

Answer 1

when an injury first occurs, a temporary clot forms where platelets gather and release substancea that attract other platelets, that become sticky and form a platelet plug. after a more permanent blood clot, consisting of a mesh of fibrin threads with trapped blood cells subsequently develops

Question 2

how do blood clots help the body?

Answer 2

blood clots defend the body by preventing excessive blood loss, and entry of bacteria through the wound

Question 3

how do platelets release fibrin threads?

Answer 3

damanged tissue platelets release thrombokinase, which converts inactive prothrombin into thrombin via calcium ions. thrombin converts soluble fibrinogen to insolubke fibrin threads