Background/Aim. Lateral branches of basilar artery mostly supply pons and cerebellum. The aim of this study was to determine the morphological characteristics of lateral branches and side branches of the individual lateral branches of human basilar artery. Methods. The research was done on 25 anatomical specimens of adult brainstems, both sexes, previously fixed by immersion in a 10% formalin. Microdissection and precise measurements of caliber and length of the basilar artery were done under the stereolupe MBS-9 by the ocular micrometer. Results. A number of lateral branches was 9 on both sides, and the number of side branches of the individual lateral branch of basilar artery ranged from 0 to 4. The average diameter of side branches on both sides was 0.15 mm while the average length on the left side was 4.31 mm and 4.06 mm on the right. Side braches on the left side of the basilar artery most commonly penetrated pons and postpontine fossa (29.82% each) and rarely the area of middle cerebellar pedicle (1.74 %). On the right side, side branches most commonly penetrated pons (35.29%), and rarely the areas of inferior and middle cerebellar pedicle (1.96% each). Conclusion. Maintrunk of basilar artery gives an equal number of lateral branches on both sides. On average, every lateral branch gives 2 side branches. The most common site of descent of the side branches is pons, while the rarest one was cerebellar pedicle.Key words: basilar artery; anatomy; brain stem; pons. ApstraktUvod/Cilj. Bočne grane arteriae basilaris u najvišem procentu vaskularizuju pons i cerebellum. Cilj rada bio je određivanje morfoloških karakteristika bočnih grana i bočnih ogranaka pojedinačnih bočnih grana arteriae basilaris čoveka. Metode. Ispitavanje je obavljeno na 25 anatomskih preparata moždanih stabala odraslih osoba, oba pola, prethodno imerziono fiksiranih u 10% formalinu. Mikrodisekcija i precizno merenje kalibra i dužine arteriae basilaris i njenih bočnih grana i ogranaka rađeno je pod stereolupom MBS-9, uz pomoć okularnog mikrometra. Rezultati. Broj bočnih grana iznosio je 9 na obe strane, a broj bočnih ogranaka pojedinih bočnih grana arteriae basilaris kretao se od 0 do 4. Prosečan prečnik bočnih ogranaka na levoj i desnoj strani iznosio je 0,15 mm. Prosečna dužina bočnih ogranaka na levoj strani bila je 4,31 mm, a na desnoj 4,06 mm. Bočni ogranci na levoj strani bazilarne arterije najčešće su ponirali u predelu pons i fossa postpontina (po 29,82% slučajeva), a najređe u područje pedunculus cerebellaris medius (1,74% slučajeva). Na desnoj strani, bočni ogranci najčešće su ponirali u pons (35,29% slučajeva), a najređe u područje pedunculus cerebellaris inferior et medius (po 1,96% slučajeva). Zaključak. Od glavnog stabla arteriae basilaris obostrano se odvaja jednak broj bočnih grana. Bočne grane arteriae basilaris u najvećem broju slučajeva davale su po dva bočna ogranka. Najčešće mesto poniranja bočnih ogranaka pojedinačnih bočnih grana arteriae basilaris obostrano je pons, a najređe obostrano, kraci malog mozga.