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.
Good question. The brachialis only functions as an elbow flexor. It is a synergist muscle of elbow flexion and works in conjunction with three other muscles: biceps brachii, brachioradialis, and pronator teres. The contraction of all four muscles occur synergistically to flex the elbow with wrist position being a large factor in controlling which muscle(s) take up the brunt of the work.