Dictionary > Renal calyses

Renal calyses

noun, singular: renal calyx
Funnel-shaped structures permitting the flow of the urine from the ducts of the renal pyramids to the renal pelvis
Renal calyses are of two types:

  • minor calyses – funnel-shaped structures surrounding one or more renal papillae
  • major calyses – funnel-shaped structures formed by the converging of two or more minor calyses

When two or more major calyses combine, the renal pelvis is formed.

Thus, the diagrammatic flow of urine from the ducts to the renal pelvis is as follows:

papillary ducts (of renal papillae) → minor calyses → major calyses → renal pelvis
Also called:

You will also like...

Plant biology
Plant Biology

Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..

Body temperature regulation by the hypothalamus
Temperature Regulation in Animals

This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..

Fossil trilobite imprint in the sediment

There are more species of insects than any other species combined. This surely illustrates that insects have the selecti..

Lotic community of algal species
Lotic Communities & Algae

Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..

"Opabinia regalis"
The Evolutionary Development of Multicellular Organisms

Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..

Population Regulation in an Ecosystem
Population Regulation in an Ecosystem

With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..