Anatomy Quiz

What is the origin of the Pronator Quadratus?

• coronoid process and suproglenoid tubercle of scapula

• Lateral humeral epicondyle, LCL, Annular Ligament

• Distal Anterior Ulna

• distal 2/3 of anterior humerus

What is the insertion of the Pronator Quadratus?

• Distal 1/4 anterior radius

• Lateral radius near its center

• Posterior Surface of olecranon process

• Lateral upper 2/3 of radius

What is the action of the Pronator Quadratus?

• Forearm Pronation and Elbow Flexion

• Forearm supination

• Forearm Pronation

• shoulder flexion, elbow flexion and forearm supination

What is the origin of the Supinator?

• Lateral humeral epicondyle, LCL, Annular Ligament

• coronoid process and suproglenoid tubercle of scapula

• upper 2/3 of lateral humeral supracondyle ridge

• medial humeral epicondyle -coronoid process

What is the insertion of the Supinator?

• -Ulna tuberosity -coronoid process

• Lateral radius just proximal to base of styloid process

• Distal 1/4 anterior radius

• Lateral upper 2/3 of radius

What is the action of the Supinator?

• Forearm Pronation

• Forearm supination

• Elbow Flexion -Supination/Pronation to midposition

• Elbow Flexion

What is the origin of the Pronator Teres?

• medial humeral epicondyle and coronoid process

• infraglenoid tubercle, lateral & posterior surface of proximal 1/2 of body of humerus, distal 2/3 of medial and posterior surfaces of humerus below radial groove

• upper 2/3 of lateral humeral supracondyle ridge

• Lateral humeral epicondyle -LCL -Annular Ligament

What is the insertion of the Pronator Teres?

• Lateral radius near its center

• Distal 1/4 anterior radius

• Ulna tuberosity and coronoid process

• Posterior Surface of olecranon process

What is the action of the Pronator Teres?

• Elbow Flexion and Supination/Pronation to midposition

• Forearm Pronation and Elbow Flexion

• shoulder flexion, elbow flexion, and forearm supination

• Elbow Flexion

What is the origin of the Triceps Brachii?

• medial humeral epicondyle and coronoid process

• infraglenoid tubercle, lateral & posterior surface of proximal 1/2 of body of humerus, distal 2/3 of medial and posterior surfaces of humerus below radial groove

• upper 2/3 of lateral humeral supracondyle ridge

• Lateral humeral epicondyle -LCL -Annular Ligament