Antagonistic muscles

Muscles work in opposing pairs to move bones in opposite directions. They can only pull, not push, so they are arranged in pairs to exert power both ways. Extensor muscles, like the triceps, open joints, while flexor muscles, like the biceps, close them.

What is the primary reason muscles are arranged in opposing pairs?

• To allow bones to move in one direction

• To enable muscles to push and pull

• To move bones in opposite directions

• To increase muscle strength

Why can't muscles push?

• They are not connected to bones

• They are too weak

• They can only contract

• They lack the necessary structure

How do muscles exert power in both directions?

• By working independently

• By contracting and expanding

• By being arranged in pairs

• By pushing and pulling

Which muscle type opens a joint?

• Extensor

• Rotator

• Flexor

• Stabilizer

What role does the biceps muscle play in the arm?

• It opens the joint

• It stabilizes the joint

• It rotates the joint

• It closes the joint