keel meaning, keel definition | English Cobuild dictionary. Search also in: Web News Encyclopedia Images. keel. ( keels plural & 3rd person present) ( keeling present participle) ( keeled past tense & past participle ) 1 n-count The keel of a boat is the long, specially shaped piece of wood or steel along the bottom of it.
The segmental arteries divide within the renal sinus to form the interlobar arteries which enter the kidney crossing the space between the calyces and adjacent cortical parenchyma, they continue by the space between pyramids (medulla) and the septa or columns of Bertin (the cortical tissue that surrounds pyramids).
E. Interlobar arteries-The lobar arteries then divide into interlobar arteries which lie in the renal columns between the medullary pyramids. F. Arcuate arteries-At the medulla-cortex junciton, the interlobar arteries branch into arcuate arteries.