Understanding Muscle Actions and Pairs

What is the primary function of antagonistic muscle pairs?

• To work together to produce the same movement

• To oppose each other's actions

• To stabilise joints during movement

• To increase the speed of muscle contraction

Which of the following is an example of an antagonistic muscle pair?

• Biceps and triceps

• Quadriceps and hamstrings

• Deltoids and pectorals

• Both A and B

What role do synergistic muscles play in movement?

• They oppose the action of the primary muscle

• They assist the primary muscle in performing a movement

• They stabilise the joint

• They initiate the movement

Which of the following muscles acts as a synergist during a bicep curl?

• Triceps

• Brachialis

• Deltoid

• Latissimus dorsi

What is the definition of muscle origin?

• The point where the muscle attaches to the moving bone

• The point where the muscle attaches to the stationary bone

• The central part of the muscle

• The end of the muscle that is closest to the heart

Where is the insertion point of the biceps brachii?

• Scapula

• Radius

• Ulna

• Humerus

What is the primary role of stabiliser muscles?

• To produce movement

• To oppose the action of the primary muscle

• To maintain posture and balance

• To increase muscle strength

Which muscle acts as a stabiliser during a push-up?

• Pectoralis major

• Triceps brachii

• Rectus abdominis

• Latissimus dorsi

Which of the following is true about muscle insertion?

• It is the point where the muscle attaches to the stationary bone

• It is the point where the muscle attaches to the moving bone

• It is always located on the axial skeleton

• It is the same as the muscle origin

During a squat, which muscle acts as a stabiliser?

• Quadriceps

• Hamstrings

• Gluteus maximus

• Erector spinae