Anatomy: The Renal Pelvis
At this point, clarification concerning terminology is necessary. In the kidney with many papillae, such as human kidney, each papilla is surrounded by a funnel shaped calyx.

Multiple Papillae
This corresponds to what we call the pelvis in the kidney with only one papilla.

One Papilla
In the human kidney, the compartment between the calyces and the ureter is called the pelvis.

Pelvis in the Multi-papillate Kidney
This compartment is not present in kidneys with one papilla. Here, the pelvis is a direct extension of the ureter. In cross sections of such mammalian kidneys, the pelvis appears to surround the inner medulla only and to have a simple funnel shape.

Funnel Shaped Pelvis