Question

which muscle is being used when standing on tiptoes?
○ gastrocnemius (calf)
○ latissimus dorsi (lats)
○ biceps
○ trapezius (traps)

Explanation:

The gastrocnemius muscle in the calf is responsible for plantar - flexion of the ankle, which is involved in standing on tiptoes. The latissimus dorsi is for movements of the upper body, the biceps for elbow flexion, and the trapezius for shoulder and neck movements.

Answer:

gastrocnemius (calf)