The Retrograde Pyelogram Is Intended to Demonstrate the Pelvicalyceal System

question 57

True/False

The retrograde pyelogram is intended to demonstrate the pelvicalyceal system.

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Definitions:

Resonance Structures

Representations of a molecule where the chemical connectivity is the same but the electrons are distributed differently around the structure.

Cyclic

Pertaining to chemical compounds that contain a ring structure within their molecules.

Lewis Structure

A diagrammatic method for representing the valence electrons of atoms within a molecule, indicating bonds between them.

Ozone

A molecule made of three oxygen atoms, O3, forming a layer in the Earth's stratosphere that protects life by absorbing most of the sun's harmful ultraviolet radiation.