Question

Which muscles contract and relax, while lifting a heavy object from the ground?​

Answer 1

Answer:

There are two groups of muscle sets which are involved in lifting, the biceps and triceps muscles when triceps muscle contract then biceps muscles relaxes that cause the straightens the arms when biceps muscle contract and triceps muscles relax then hand lift.

Answer 2

Muscle tissue is a soft tissue that works in conjunction with bone to execute mechanical tasks such as pushing, pulling, lifting, and other activities.

Explanation:

• Muscles are primarily responsible for changing and maintaining posture, motility, and movement of an internal organ, such as the heart's contraction and the digestive tract's peristalsis movement.
• The biceps and triceps muscles are engaged in lifting. When the triceps muscles contract, the biceps muscles relax, causing the arms to straighten.
• When the biceps muscles contract and the triceps muscles relax, the arms straighten. The triceps muscle is not as powerful as the biceps muscle and cannot apply the same muscle force to straighten the arm, but the biceps muscle can raise and straighten the arms.