From which anatomical landmarks does the splenius cervicis muscle originate?

The splenius cervicis muscle originates from the spinous processes of the T3 to T6 vertebrae. This muscle is part of the splenius group, which is responsible for extension, lateral flexion, and rotation of the neck. Understanding its origin from the T3-T6 spinous processes provides insight into its role in neck movements and stabilization.

The choice regarding the transverse processes of C1-C3 is not correct, as the splenius cervicis does not originate from the cervical vertebrae. The option referencing the posterior tubercle of the upper cervical vertebrae is also inaccurate, as this point is associated with different muscles of the neck. The crest of the pubis is unrelated to the anatomy of the splenius cervicis, as it pertains to the pelvis rather than the spinal musculature. Therefore, the origin from the spinous processes of T3 to T6 accurately reflects the anatomical positioning and functional engagement of the splenius cervicis muscle.