The video tutorial explains the anatomy and function of the elbow joint, focusing on the biceps and triceps muscles. It covers elbow flexion and extension, detailing the roles of the biceps brachii and triceps brachii, including their origins, insertions, and actions. The tutorial also highlights exercises like bicep curls and tricep extensions, and discusses accessory muscles aiding in these movements.

What new insight or understanding did you gain from this video?