Tundra. The tundra is a treeless polar desert found in the high latitudes in the polar regions, primarily in Alaska, Canada, Russia, Greenland, Iceland, and Scandinavia, as well as sub-Antarctic islands.
The muscles acting on the foot can be divided into two distinct groups; extrinsic and intrinsic muscles. 1  The extrinsic muscles arise from the anterior, posterior and lateral compartments of the leg.2  They are mainly responsible for actions such as eversion, inversion, plantarflexion and dorsiflexion of the foot. The extrinsic muscles arise from the anterior, posterior and lateral compartments of the leg. 2  They are mainly responsible for actions such as eversion, inversion, plantarflexion and dorsiflexion of the foot.
How to Strengthen the Extrinsic Muscles of the Foot (Video). The foot and ankle support the entire leg and strengthening them will help build your solid base so that you can perform all your activities and sports without risk of injury.Strengthen the extrinsic muscles of the foot with help from a physical therapist with a private practice in this free video clip.advertisement.his is Jamie Glick. I'm here to talk about how to strengthen the extrinsic muscles of the foot. The foot and ankle support the entire leg and strengthening them will help build your solid base so that you can perform all your activities and sports without risk of injury.