The main nutritive opening is always distally oriented with respectto humerus from the medial side. The nutritive channel, the extension of this opening is distally oriented. Proximal epiphysis of the humerus are supplied blood by branches of A.circumflexa humeri cranial is and A.circumflexa humeri caudalis. Corpus humeri received blood supply from A. principal is humeri, that a branch of A.brachialis or in certain cases A.ulnaris. Blood supply for distal epiphysis comes from A.collateral is ulnaris proximalis and A.collateral is ulnaris distali s. Rami periostales originate from humerus muscle branches that vascularize muscles in scapulo-humeral region and from nutritive branches prior the entry to the Foramen nutricium.