Question

Do the muscles pull the structures,or push them?Explain briefly.

Concise Biology Class IX By H.S. Vishnoi CHAPTER 14-MOVEMENT AND LOCOMOTION

Answer 1

Muscle can perform pull. Biceps pull to close space between the upper and forearm.

Also, triceps can only pull to open the area again. Contraction is their only function.

You can say muscles will be pulled when you push the lever.

This will be done when the force is applied to the level by muscles.

They will contract and relax.

Answer 2

Answer:

They pull the structure.

Explanation:

Muscles do not push. they pull the structure. Every muscle has two ends - a fixed end where the muscle originates and a movable end which pulls some other part. The movable end is shorter and thicker and hence pulls the bone at the movable end. Muscles can only contract and relax, they cannot lengthen or elongate.

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