Pronator Teres - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The pronator teres is a muscle within the superficial compartment of the anterior forearm. The lateral border of the pronator teres forms the medial border of the cubital fossa – an anatomical area located over the elbow. Attachments: Originates from the medial epicondyle of the humerus and the coronoid process of the ulna. It attaches laterally to the mid-shaft of the radius. Actions: Pronation of the forearm. Innervation: Median nerve. Blood supply: Ulnar artery By TeachMeSeries Ltd (2026) Fig 1The superficial muscles of the anterior forearm. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Frequent questions What is the pronator teres muscle? The pronator teres is a muscle located in the superficial compartment of the anterior forearm, playing a key role in the pronation of the forearm. Where does the pronator teres muscle originate? The pronator teres originates from the medial epicondyle of the humerus and the coronoid process of the ulna, providing a stable base for its function. What is the primary action of the pronator teres? The primary action of the pronator teres is to facilitate the pronation of the forearm, allowing for the rotation of the radius over the ulna. Which nerve innervates the pronator teres? The pronator teres is innervated by the median nerve, which is crucial for its motor function. What is the blood supply for the pronator teres muscle? The blood supply to the pronator teres muscle comes from the ulnar artery, ensuring it receives adequate oxygen and nutrients for its activity. Rate This Article