Cardium

The term cardium comes from the Greek word for 'heart'. It is a frequently encountered term in physiology where it is incorporated into scientific nomenclature.

Illustration depicting the layers of the heart wall including the innermost endocardium

Human Heart

The wall of the human heart has three layers;

The entire protective region is oftentimes referred to as the cardium.[1] Endocarditis is an infection of the inner layer caused by the bacterium Bergeyella cardium.

Heart-Shaped Shells

Cardium became the name of a taxonomic genus within the family Cardiidae – the cockles because of the heart-like appearance of its shells.[2] Their shells are widely used in cardium pottery as a decorative style imprint.

Shale Oil
Fossil Cardiidae shells (Late Cretaceous, Alberta, Canada)

*The Cardium Formation gets its name from marine clastic cardium shells that got deposited and fossilized during the late Cretaceous period. This region has become a major shale oil deposit shared by Alberta, British Columbia and Montana.[3]

References
  1. "The 3 Layers of the Heart Wall". Retrieved May 11, 2019.
  2. "Little Heart Cockle Corculum cardissa". Retrieved April 16, 2020.
  3. "cardium microseismic alberta A case history". Retrieved April 15, 2020.
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