The video tutorial discusses the serratus anterior muscle, a fan-shaped muscle located at the lateral wall of the thorax. It details the muscle's origin from the 1st to 9th ribs and its insertion at the scapula. The muscle is divided into three parts: superior, intermediate, and inferior, each with specific roles. The serratus anterior is innervated by the long thoracic nerve and plays a crucial role in scapula movement and stabilization. It also assists in lifting the ribs during inspiration. The video concludes with a call to explore more anatomy resources on Kenhub.

What is the origin of the serratus anterior muscle?

Describe the three parts of the serratus anterior muscle.

What is the function of the serratus anterior muscle in relation to the scapula?

What role does the serratus anterior muscle play during inspiration?

How does the inferior part of the serratus anterior muscle affect the shoulder joint?