The insertion of the splenius cervicis is on which structures?

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Multiple Choice

The insertion of the splenius cervicis is on which structures?

Explanation:
Insertion location shows where the muscle attaches to the cervical spine at the end of its pull, shaping how it moves the neck. Splenius cervicis reaches from the upper thoracic spine up to the upper cervical region and attaches to the transverse processes of the first few cervical vertebrae, typically C1–C3. This placement lets it extend the neck when both sides contract and rotate or laterally flex it to the same side when contracting unilaterally. Spinous processes of T1–T3 would represent an origin level for this muscle, not where it inserts. The posterior attachments to the skull—such as the occipital bone and mastoid process—belong to splenius capitis, a closely related muscle, not to splenius cervicis.

Insertion location shows where the muscle attaches to the cervical spine at the end of its pull, shaping how it moves the neck. Splenius cervicis reaches from the upper thoracic spine up to the upper cervical region and attaches to the transverse processes of the first few cervical vertebrae, typically C1–C3. This placement lets it extend the neck when both sides contract and rotate or laterally flex it to the same side when contracting unilaterally.

Spinous processes of T1–T3 would represent an origin level for this muscle, not where it inserts. The posterior attachments to the skull—such as the occipital bone and mastoid process—belong to splenius capitis, a closely related muscle, not to splenius cervicis.

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