See Also: inferior part(medicine)
inferior part of duodenum(medicine)
inferior part of vestibular ganglion(medicine)
inferior part of vestibulocochlear nerve(medicine)
cricopharyngeal part of inferior pharyngeal constrictor(medicine)
inferior surface of petrous part of temporal bone(medicine)
thyropharyngeal part of inferior pharyngeal constrictor muscle(medicine)
inferior part of lingular branch of left pulmonary vein(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
prothrombin(encyclopedia)

inferior part of duodenum (medicine) and prothrombin (sh)


inferior part of duodenum (medicine)


inferior part of duodenum -->
horizontal part of duodenum
pars horizontalis duodeni, inferior part of duodenum, pars inferior duodeni


prothrombin (sh)




Carbohydrate-protein compound in plasma essential to coagulation.

In response to bleeding, a complex series of clotting-factor interactions leads to its conversion by thromboplastin to thrombin, which transforms fibrinogen in plasma into fibrin. Fibrin and platelets combine to form a clot. Hemophilia is caused by a hereditary lack of one of the clotting factors. Vitamin K is needed to synthesize prothrombin, so conditions that impair the vitamin's absorption result in prothrombin deficiency and a tendency to prolonged bleeding.