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).
Each renal artery gives off small branches in its proximal course, prior to dividing into dorsal and ventral rami. The dorsal and ventral rami divide into segmental branches which then divide into lobar branches. The lobar arteries successively branch into interlobar, arcuate and interlobular arteries. The afferent arterioles, which supply the glomeruli, originate from the interlobular arteries.