Nerve roots of the long thoracic nerve

The video tutorial explains the role of the long thoracic nerve, which originates from the C5, C6, and C7 nerve roots of the brachial plexus. It supplies the serratus anterior muscle, enabling anterolateral movement of the scapula along the ribs. This movement allows us to raise our arms above 90 degrees, effectively lifting them 'to heaven.' The key takeaway is to remember the nerve roots C5, C6, and C7 for arm-raising functionality.

Describe the movement that occurs when the serratus anterior muscle contracts.

What is the function of the serratus anterior muscle?

How does the serratus anterior muscle contribute to arm movement?

From which nerve roots does the long thoracic nerve originate?

What is the significance of remembering C5, C6, and C7 in relation to the long thoracic nerve?