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A major calyx, in the kidney, surrounds the apex of the renal pyramids.
Flint's arcade-an arteriovenous arch at the base of the renal pyramids.
The renal medulla is split up into a number of sections, known as the renal pyramids.
Between the renal pyramids are projections of cortex called renal columns (of Bertin).
In the adult, it forms a continuous smooth outer zone with a number of projections (renal column) that extend down between the renal pyramids.
The renal lobe is a portion of a kidney consisting of a renal pyramid and the renal cortex above it.
Renal pyramids (or malpighian pyramids or Malpighi's pyramids named after Marcello Malpighi, a seventeenth century anatomist) are cone-shaped tissues of the kidney.
The renal column (or Bertin column, or column of Bertin) is a medullary extension of the renal cortex in between the renal pyramids.
The renal tubules become arranged into renal pyramids, and the lobulated condition of the kidneys exists for some time after birth, while traces of it may be found even in the adult.
Grossly, these structures take the shape of 8 to 18 cone-shaped renal lobes, each containing renal cortex surrounding a portion of medulla called a renal pyramid (of Malpighi).
Each renal artery branches into segmental arteries, dividing further into interlobar arteries which penetrate the renal capsule and extend through the renal columns between the renal pyramids.
Distinctive features of the mammalian kidney, in comparison with that of other vertebrates, include the presence of the renal pelvis and renal pyramids, and of a clearly distinguishable cortex and medulla.
They unite at short intervals with one another, the resulting tubes presenting a considerable increase in caliber, so that a series of comparatively large tubes passes from the bases of the medullary rays into the renal pyramids.
The venae stellatae join to form the interlobular veins, which pass inward between the rays, receive branches from the plexuses around the convoluted tubules, and, having arrived at the bases of the renal pyramids, join with the venae rectae.
They run outward in a straight course between the tubes of the medullary substance, and joining, as above stated, the interlobular veins, form venous arcades; these in turn unite and form veins which pass along the sides of the renal pyramids.