Abstract. Hyperbranched polymers are polymers based on A x B-monomers, ie, monomers having one B-functionality and two or more A-groups resulting in polymers with a potential branching point in each repeat unit.
Source(s): 30 years in sports medicine and clinical nutrition. The biceps brachii is a antagonist of the triceps brachii. If the triceps brachii will contract, the biceps brachii will stretch and vice versa. Pushups. I do about 500 per day (200 AM, 300 PM) and my arms aren't huge, but they're toned pretty well, I guess.
The biceps brachii crosses two joints - the shoulder and the elbow - so it can influence movement of both joints. The biceps brachii can bring about a variety of movements when it shortens, including: Supination: turning the palm upward. Let one arm hang with your palm facing behind you. When your biceps brachii contracts, it tugs on the radius and pulls it to the outside. This turns your palm to face forward.