"The junction of the SMA and IMA territories is at the splenic flexure. Anastomoses here are often weak or absent, hence the marginal artery at this point (known as Griffiths point) is often focally small or discontinuous. For this reason, the splenic flexure is a watershed (border zone) area prone to ischaemia and infarction."
"The marginal artery of Drummond is named after British pathologist and anatomist Sir David Drummond (1852–1932) who found that even though the three main colic arteries were surgically tied off, contrast medium injected into the ileocolic artery still passed to the sigmoidal branches 4,5."
"History and etymology"