pontine arteries pontine arteries the pontine arteries are a number of small arteries which come off at right angles from either side of the basilar artery and supply the pons and adjacent parts of the brain. the pontine arteries include the paramedian arteries, the short circumferential, and the long circumferential arteries. pontine arteriesdiagram of the arterial circulation at the base of the brain. (pontine labeled at center left.)detailssourcebasilar arterysuppliesponsidentifierslatinarteriae ad pontemta98a12.2.08.021ta24559fma70796anatomical terminology