इनजुरनि गोरा सा-सिमाया गुसेब नोलिफोरनि गेजेरजों थैनि लासै बोहैनायजों जयै मोनसे लाद्रा दानो लाथा सोमजिहोनो हागौ।
The rough surface of the wall together with the sluggish flow of blood through the narrow channels may cause a clot to form, a thrombus.