Understanding Muscle Actions and Joints

What is the concentric phase of a muscle action?

• When the muscle lengthens under tension

• When the muscle shortens under tension

• When the muscle remains the same length

• When the muscle relaxes completely

During a bicep curl, when does the eccentric phase occur?

• When lifting the weight

• When lowering the weight

• When holding the weight still

• When the arm is fully extended

Which joint is primarily involved in a leg press exercise?

• Shoulder

• Elbow

• Knee

• Wrist

In a lat pulldown exercise, which muscle is primarily responsible for the movement?

• Quadriceps

• Latissimus dorsi

• Triceps brachii

• Deltoids

What is the primary joint action of the shoulder during the concentric phase of a shoulder press?

• Flexion

• Extension

• Abduction

• Adduction

During a triceps pulldown, which joint is primarily involved?

• Shoulder

• Elbow

• Knee

• Hip

In a seated row exercise, what is the eccentric phase action of the shoulder joint?

• Flexion

• Extension

• Abduction

• Adduction

Which muscle is primarily responsible for controlling the elbow joint during a triceps push-down?

• Biceps brachii

• Triceps brachii

• Deltoids

• Rhomboids

What is the primary joint action of the knee during the eccentric phase of a leg press?

• Flexion

• Extension

• Abduction

• Rotation

In the Lat Pull Down - what happens to the elbow during the eccentric phase?

• Flexion

• Extension

• Adduction

• Abduction