Posterior superior alveolar aery is a branch of:
Posterior superior alveolar aery arises from third pa of maxillary aery just before it enters the pterygomaxillary fissure. BRANCHES OF MAXILLARY AERY
Nasal branch of maxillary aery
Palatal branch of maxillary aery
Mandibular aery
Inferior alveolar aery
Abdomen: Miscellaneous