Origin of Splenius capitis?

Master the Back Muscles: Origins, Insertions, Actions and Innervations with a comprehensive quiz. Engage with diverse question formats, including multiple choice and flashcards, each supplemented with hints and explanations. Ensure your readiness for academic and professional success!

Multiple Choice

Origin of Splenius capitis?

Explanation:
Splenius capitis begins from the lower portion of the nuchal ligament plus the spinous processes of the lower neck and upper back, typically C7 through T4 (some texts list T3). This origin sits along the midline of the back of the neck and upper thorax, from which the muscle fibers extend upward and laterally to reach the skull. The attachment to the mastoid process is the insertion, helping explain why the muscle can extend the head and rotate it to the same side when it contracts. So the given origin matches the known anatomy: spinous processes of C7–T4 and the nuchal ligament. The mastoid process is not an origin, and the transverse processes of C1–C3 or spinous processes further down (like T5–T8) don’t describe splenius capitis.

Splenius capitis begins from the lower portion of the nuchal ligament plus the spinous processes of the lower neck and upper back, typically C7 through T4 (some texts list T3). This origin sits along the midline of the back of the neck and upper thorax, from which the muscle fibers extend upward and laterally to reach the skull. The attachment to the mastoid process is the insertion, helping explain why the muscle can extend the head and rotate it to the same side when it contracts.

So the given origin matches the known anatomy: spinous processes of C7–T4 and the nuchal ligament. The mastoid process is not an origin, and the transverse processes of C1–C3 or spinous processes further down (like T5–T8) don’t describe splenius capitis.

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