Origin of levator scapulae?

Origin of levator scapulae?

• A. Spinous processes of C5-C7
• B. Transverse processes of C2-C3
• C. Transverse processes of C1-C4
• D. Transverse processes of C4-C6

Answer: (D)

Levator scapulae starts from the transverse processes of the upper cervical vertebrae, specifically the first through fourth cervical vertebrae. From there, it runs downward to insert on the superior angle of the scapula. This location explains its function: it elevates the scapula and helps downwardly rotate the glenoid cavity, which is important when you shrug or pull the shoulder downward. Innervation is by the dorsal scapular nerve (C5) with contributions from C3-C4. The other landmarks listed don’t match this muscle’s true origin—spinous processes of the lower cervical spine are associated with different muscles, and the true origin is from the upper cervical transverse processes (C1–C4).

Levator scapulae starts from the transverse processes of the upper cervical vertebrae, specifically the first through fourth cervical vertebrae. From there, it runs downward to insert on the superior angle of the scapula. This location explains its function: it elevates the scapula and helps downwardly rotate the glenoid cavity, which is important when you shrug or pull the shoulder downward. Innervation is by the dorsal scapular nerve (C5) with contributions from C3-C4. The other landmarks listed don’t match this muscle’s true origin—spinous processes of the lower cervical spine are associated with different muscles, and the true origin is from the upper cervical transverse processes (C1–C4).