splenius in dogs

A superficial postvertebral muscle innervated by the posterior ramus of the cervical spinal nerve with origins in the upper thoracic and lower cervical spinous processes whose actions are to extend and ipsilaterally rotate the head and neck. Examples: splenius capitis, splenius cervicis. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the splenius is

A superficial postvertebral muscle innervated by the posterior ramus of the cervical spinal nerve with origins in the upper thoracic and lower cervical spinous processes whose actions are to extend and ipsilaterally rotate the head and neck. Examples: splenius capitis, splenius cervicis. The atlas records it as a muscle at the organ scale in the dog.

Where the splenius is

It sits in the back and trunk, within the muscular system. Only the region is known. The position shown is somewhere plausible inside it and nothing more.

What the splenius connects to

The atlas records 4 typed relationships for it, across 3 kinds of connection. part of dorsum.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the splenius. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as splenius muscle. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002252, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

Questions

Where is the splenius?

It sits in the back and trunk, within the muscular system. Only the region is known. The position shown is somewhere plausible inside it and nothing more.

What does the splenius connect to?

Part of: dorsum.

Is the splenius the same in other species?

This page describes the dog. The human record of the same structure sits beside it on /compare, over one shared model rather than two atlases built separately.