part of part of connecting branch of vessel supplies blood to system ophthalmic artery artery Harderian gland ophthalmotemporal branch of external ophthalmic artery ophthalmotemporal artery UBERON:0015158 The blood supply to the (Harderian) gland has been reported in greatest detail in the sparrow Passer domesticus (Slonaker, 1918), where it is derived through the ophthalmotemporal branch of the external ophthalmic artery http://www.ncbi.nlm.nih.gov/pubmed/7559104