Question

multiple choice question

which muscle is classified as both a neck extensor and a posterior shoulder muscle?

rhomboid major
rhomboid minor
levator scapulae
trapezius

Explanation:

Analyze the functional criteria

The question asks for a muscle that serves two distinct anatomical roles:

1. A neck extensor (extends the head and neck at the cervical spine).
2. A posterior shoulder/scapular muscle (acts on the pectoral girdle).

Evaluate the given options

Using the Trapezius Muscle Anatomy and Neck Extensors knowledge points:

• Rhomboid major and Rhomboid minor: These muscles connect the vertebral column to the medial border of the scapula. They retract and rotate the scapula but do not extend the neck.
• Levator scapulae: This muscle elevates the scapula and can assist in lateral flexion of the neck, but its primary action is scapular elevation rather than neck extension.
• Trapezius: This large, superficial triangular muscle extends from the occipital bone and spinous processes of the cervical and thoracic vertebrae to the clavicle and scapula. Its superior fibers extend the head and neck, while its middle and inferior fibers act on the scapula (posterior shoulder region).

Thus, the trapezius fits both classifications.

Answer:

• Rhomboid major
• Rhomboid minor
• Levator scapulae
• Trapezius (Correct answer)