Back & Shoulder Muscles

What type of muscle is the trapezius?

A large, superficial, trapezoidal muscle of the back.

Where does the trapezius begin?

At the occipital bone.

How far inferiorly does the trapezius extend?

To the 12th thoracic vertebra.

What muscles are deep to the trapezius?

The rhomboids.

What are the two rhomboid muscles?

Rhomboid major and rhomboid minor.

Which rhomboid is larger?

Rhomboid major.

Which rhomboid is smaller and superior?

Rhomboid minor.

What do the rhomboids do?

Pinch the shoulder blades together.

Where is the deltoid located?

On the shoulder.

What type of muscle is the deltoid?

A superficial shoulder muscle.

Where is the latissimus dorsi located?

In the inferior portion of the back.

What do the deltoid and latissimus dorsi have in common?

Both move the humerus.