Question

php?sz-b40db01aw 49048,3499409 rter Critical thinking question 15.3 (p.336) When the biceps brachii contracts, the elbow flexes. When the triceps brachi contracts, the elbow extends Explain the role of both muscles in terms of agonist and antagonist in both of these movements p 4 of 16

Answer 1

When the biceps brachii contracts, the elbow flexes. When the triceps brachii contracts, the elbow extends. Explain the role of both muscles in terms of agonist and antagonist in both of these movements Skeletal muscles are classified into four types based on their function: 1. Agonists or prime movers 2. Antagonists 3. Synergists 4. Fixators Agonists or prime movers are responsible for producing a particular movement of the body. For example, icags moer of eion The acion otds i ppoed by Antagonists are the muscles that oppose the movement or reverse the movement of muscles. Antagonists can also be agonists. For example, the biceps of the arm is antagonised by triceps of the arm, but both are agonists of elbow flexion and elbow extension respectively.