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) to build suspense. And while I'm not entirely proud to open this recap with a hacky, predictable bait-and-switch, "Under the Dome" isn't the least bit ashamed to end on one." Andrea Reiher of Zap2it said despite the ending with Angie gazing at Jim and Norrie being "creepy," she then said "It's also interesting to watch Big Jim and Junior be so separated, since in the book they are definitely partners in crime. Is the show on its way there?" Thicker Than Water (Under the Dome) "Thicker Than Water" is the eighth episode of the first season of the CBS drama