Beginner Muscle Compartments of the Upper Limb Quiz

Q1. Into which two major muscle compartments is the arm divided?

• Radial and ulnar compartments
• Superficial and deep compartments only
• Anterior and posterior compartments
• Medial and lateral compartments

Q2. Which muscle is located in the anterior compartment of the arm?

• Anconeus
• Triceps brachii
• Biceps brachii
• Extensor digitorum

Q3. Which muscle occupies most of the posterior compartment of the arm?

• Coracobrachialis
• Brachialis
• Biceps brachii
• Triceps brachii

Q4. Which nerve principally supplies the anterior compartment of the arm?

• Musculocutaneous nerve
• Radial nerve
• Ulnar nerve
• Axillary nerve

Q5. Which nerve supplies the posterior compartment of the arm?

• Radial nerve
• Ulnar nerve
• Median nerve
• Musculocutaneous nerve

Q6. What is the primary action associated with muscles of the posterior arm compartment?

• Abduction of the fingers
• Flexion of the fingers
• Opposition of the thumb
• Extension at the elbow

Q7. The anterior compartment of the forearm is primarily associated with which actions?

• Flexion and pronation
• Elbow extension only
• Shoulder abduction
• Extension and supination only

Q8. The posterior compartment of the forearm is primarily associated with which action?

• Adduction of the shoulder
• Extension of the wrist and digits
• Flexion of the shoulder only
• Flexion of the wrist and digits

Q9. Which nerve supplies most muscles of the anterior forearm compartment?

• Median nerve
• Radial nerve
• Musculocutaneous nerve
• Axillary nerve

Q10. Which nerve supplies the extensor muscles of the posterior forearm compartment?

• Ulnar nerve only
• Axillary nerve
• Radial nerve and its branches
• Median nerve only