Question

1. Which of the two muscles work in
pairs by contraction and
expansion ? (Biceps and Triceps /
Fontal and Trapezius)​

Answer 1

Answer:

Biceps and triceps

Explanation:

These two muscles work in pairs by contraction and expansion

Answer 2

The muscles biceps and triceps work in contraction and expansion

• Biceps and triceps work in most of the majority of the arm musculature in the human body. Both the muscles are located opposite to each other but the role of each muscle differs.
• The biceps are situated in the upper part of the arm which generally has the role of arm flexion.
• Whereas the triceps are present beneath the upper arm, and the role of these triceps muscles is for arm extension.
• These muscles are attached to the bone through the connective tissues called tendons.
• When a person bends the elbow, the biceps muscles contract, and the triceps muscles relax.
• Likewise, the triceps muscles contract when the person relaxes his/her arm.

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