Question

Which of the following muscles are considered synergist muscles, and what are their common actions?

Biceps brachii

Triceps brachii

Deltoid

Pectoralis Major

Latissimus dorsi

rectus femoris

semitendinosus

biceps femoris

gastrocnemius

Answer 1

Synergist muscles are those muscles around the joint in which agonist function is observed in an effective manner. This also creates the movement and adapt other muscles to perform the movement. These muscle moves with chest, as well as shoulder, to perform push up. These muscles are helpful for the movement of the biceps in the upper arm and this helps in the motion. Muscles also work in opposite action and prime mover is known as the antagonist.

The muscles that are considered as synergist muscles with their actions-

1. Biceps brachii-These is composed of two Synergist muscles which assist in flexing rotation of the forearm. These are found at the anterior part of the arm as well as the forearm.

2. Gastrocnemius-This is a synergistic muscle of biceps and upper arm which is responsible for the movement of the head backward and forward.