How many major muscles are listed for the back?

The correct answer indicates that there are six major muscles identified in the back. Understanding the anatomy of the back is crucial for anyone involved in physical therapy and rehabilitation. The major muscles in the back play significant roles in stabilizing the spine, facilitating movement, and supporting overall posture.

The primary muscles often referenced include:

1. Trapezius: This large muscle extends along the back of the neck and upper spine, playing a vital role in moving and stabilizing the shoulder girdle.

2. Latissimus Dorsi: A broad muscle that extends from the middle of the back to the humerus, it is crucial for shoulder movements and stabilization.

3. Rhomboids: Comprising rhomboid major and rhomboid minor, these muscles help retract the scapula and are essential in shoulder girdle mechanics.

4. Erector Spinae: This group of muscles runs vertically along the spine and is fundamental in maintaining erect posture and spinal movements.

5. Multifidus: Providing stability to the spine, this muscle runs along the vertebral column and is important in preventing excessive movements that could lead to injury.

6. Teres Major: While smaller, it assists in the movement of the arm and contributes to the overall function of the