Intertubercular groove muscles

The video tutorial covers the intertubercular groove muscles, focusing on the pectoralis major, teres major, and latissimus dorsi. It explains their origins, insertions, and actions on the glenohumeral joint, such as adduction and extension. The tutorial also highlights the innervation of the latissimus dorsi via the thoracodorsal nerve, emphasizing its clinical relevance.

What is the significance of the term 'two majors and a miss' in relation to the muscles acting on the glenohumeral joint?

Explain the innervation of the latissimus dorsi muscle.