Splenius capitis originates from spinous processes of which vertebrae range?

Splenius capitis originates from spinous processes of which vertebrae range?

• A. Spinous processes of C7-T6
• B. Spinous processes of T1-T4
• C. Spinous processes of C2-C6
• D. Spinous processes of L1-L4

Answer: (A)

Splenius capitis is a superficial back muscle whose origin runs along the midline from the spinous processes of the lower cervical to the upper thoracic vertebrae. This arrangement lets the muscle fibers run upward to attach on the mastoid process and the superior nuchal line, enabling head extension and aiding in lateral flexion and rotation. The specific origin range from the seventh cervical vertebra to the sixth thoracic vertebra fits this anatomy, reflecting the lower-neck to upper-back start point of the muscle. Other ranges either miss the lower cervical contribution, stay too high in the neck, or lie in regions (like the lumbar) that do not contribute to splenius capitis origin.

Splenius capitis is a superficial back muscle whose origin runs along the midline from the spinous processes of the lower cervical to the upper thoracic vertebrae. This arrangement lets the muscle fibers run upward to attach on the mastoid process and the superior nuchal line, enabling head extension and aiding in lateral flexion and rotation. The specific origin range from the seventh cervical vertebra to the sixth thoracic vertebra fits this anatomy, reflecting the lower-neck to upper-back start point of the muscle. Other ranges either miss the lower cervical contribution, stay too high in the neck, or lie in regions (like the lumbar) that do not contribute to splenius capitis origin.