Muscle Actions and Joints Quiz

Which muscle is responsible for flexion of the head at the atlantoaxial joint?

• Trapezius

• Sternocleidomastoid

• Splenius

• Scalenes

What muscle is primarily responsible for extension of the trunk?

• Erector spinae

• Rectus abdominis

• Latissimus dorsi

• Psoas

Which muscle assists in shoulder abduction beyond 30 degrees?

• Deltoid

• Teres major

• Pectoralis major

• Supraspinatus

What is the primary muscle for elbow flexion?

• Supinator longus

• Pronator teres

• Biceps brachii

• Triceps brachii

Which muscle is involved in hip flexion up to 70 degrees?

• Adductor magnus

• Rectus femoris

• Psoas

• Gluteus maximus

What muscle is responsible for knee extension?

• Hamstrings

• Popliteus

• Quadriceps

• Gracilis

Which muscle is involved in external rotation of the shoulder?

• Pectoralis minor

• Teres major

• Subscapularis

• Infraspinatus

What muscle is responsible for wrist flexion?

• Triceps brachii

• Flexor carpi radialis

• Wrist extensors

• Biceps brachii

Which muscle assists in hip adduction?

• Adductor magnus

• Tensor fasciae latae

• Pectineus

• Gluteus maximus

What muscle is primarily responsible for scapular elevation?

• Lower Trapezius

• Upper Trapezius

• Middle Trapezius

• Rhomboids