At About the Level of the Fourth Lumbar Vertebra, the Abdominal

question 63

True/False

At about the level of the fourth lumbar vertebra, the abdominal aorta divides into left and right common iliac arteries.

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Definitions:

Morphological Divergence

The evolution of different forms, structures, or appearances in organisms as a result of adaptation to different environments or ecological niches.

Body Plans

The general physical layout of an organism, including the arrangement of organs and tissues; varies widely across the animal kingdom.

Geologic Time

A system of chronological measurement that relates stratigraphy to time, used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events in Earth’s history.

Archaean

A member of the domain Archaea, a group of single-celled microorganisms that are distinct from bacteria and eukaryotes, often thriving in extreme environments.