Muscles & Their Actions

Front

What muscle is responsible for flexion of the trunk at the hip?

Back

Rectus abdominus.

Front

Which muscle's action flexes the arm at the shoulder?

Back

Pectoralis major.

Front

What is the action of the Orbicularis Oculi muscle?

Back

Closes the eyelids.

Front

Which muscle allows you to raise up onto your toes and point the foot?

Back

Gastrocnemius.

Front

Which muscle rotates and flexes your head?

Back

Sternocleidomastoid.

Front

What is the primary function of the Biceps Brachii?

Back

Flexes the elbow and supinates the forearm.

Front

What muscle is known as the 'chewing muscle'?

Back

Masseter.

Front

What is the action of the Trapezius muscle?

Back

Elevates, retracts, and rotates the scapula.

Front

Which muscle is responsible for extending the knee?

Back

Quadriceps.

Front

What is the primary action of the Hamstrings?

Back

Flexes the knee and extends the hip.