The rectus capitis posterior minor originates from which structure?

The rectus capitis posterior minor originates from which structure?

• A. Posterior arch of C1
• B. Spinous process of C2
• C. Transverse process of C1
• D. Inferior nuchal line

Answer: (A)

The start of this muscle’s story is its origin. The rectus capitis posterior minor begins from the posterior tubercle on the posterior arch of the first cervical vertebra (C1, the atlas). That location explains why the posterior arch of C1 is the correct answer. From there, it runs to insert on the occipital bone’s inferior nuchal line, allowing head extension and stabilization at the craniovertebral junction. It’s innervated by the suboccipital nerve (dorsal ramus of C1). As for the other options, the spinous process of C2 is the origin for the rectus capitis posterior major, not minor; the transverse process of C1 serves as an attachment for other suboccipital muscles; and the inferior nuchal line is where this muscle attaches, not where it starts.

The start of this muscle’s story is its origin. The rectus capitis posterior minor begins from the posterior tubercle on the posterior arch of the first cervical vertebra (C1, the atlas). That location explains why the posterior arch of C1 is the correct answer. From there, it runs to insert on the occipital bone’s inferior nuchal line, allowing head extension and stabilization at the craniovertebral junction. It’s innervated by the suboccipital nerve (dorsal ramus of C1).

As for the other options, the spinous process of C2 is the origin for the rectus capitis posterior major, not minor; the transverse process of C1 serves as an attachment for other suboccipital muscles; and the inferior nuchal line is where this muscle attaches, not where it starts.