Posterior compartment of the forearm Posterior compartment of the forearm The posterior compartment of the forearm (or extensor compartment) contains twelve muscles which are chiefly responsible for extension of the wrist and digits, and supination of the forearm. It is separated from the anterior compartment by the interosseous membrane between the radius and ulna. There are generally twelve muscles in the posterior compartment of the forearm, which can be further divided into a superficial, intermediate, and deep layer. Most of the muscles in the superficial and the intermediate layers share a common origin which is the outer part of the elbow, the lateral epicondyle of
Thicker Than Water (Under the Dome) Thicker Than Water (Under the Dome) "Thicker Than Water" is the eighth episode of the first season of the CBS drama "Under the Dome." The episode aired on August 12, 2013. At night, Junior (Alexander Koch) comes home but Big Jim (Dean Norris) points a gun at him and tells him to leave. The next morning, Big Jim confronts Ollie (Leon Rippy) and gets Barbie (Mike Vogel), Linda (Natalie Martinez), Junior and a volunteer (Jimmy Gonzalez) to take the well from Ollie. However, when they arrive, a number of Ollie's men with guns appear and shoot the volunteer in the