The Land Bridge Called Beringia During the Last Glacial Advance

question 17

Multiple Choice

The land bridge called Beringia during the last glacial advance about 20,000 years ago allowed animals to be exchanged among which two zoogeographic realms?

• A)Neotropic and Nearctic
• B)Australian and New Zealand
• C)Palearctic and Nearctic
• D)Neotropic and Paleotropic

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Definitions:

Sternocleidomastoid

A significant muscle in the neck that is involved in the rotation and flexion of the head.

Tibialis Anterior

A muscle in the lower leg that is involved in dorsiflexion and inversion of the foot.

Biceps Femoris

A muscle of the posterior thigh involved in knee flexion and hip extension, part of the hamstrings group.

Extensor Digitorum Longus

The extensor digitorum longus is a muscle in the lower leg that helps extend the toes and dorsiflex the foot, facilitating walking and running.