<prompt> Heparin is the commonly used anticoagulant in cardiac surgery. All of the following are true about heparin EXCEPT:Weakest acid found in living beingsMost commercial preparations of heparin are derived from pig intestineActs via antithrombin activationProduce thrombocytopenia  <response>: Heparin is the strongest organic acid found in human beings.It acts by activating AT-III that inhibits factor Xa and IIa.Adverse effects of heparin are: Bleeding, Osteoporosis, Thrombocytopenia, Hypersensitivity, Alopecia.Most commercial preparations of heparin are derived from ox lung and pig intestine. 