📖 Static demo — read-only snapshot
You’re browsing a static build of the Body IQ knowledge graph, so everything loads with no backend. A few things that need the live server are turned off here:
- Global search (sidebar) is disabled — it queries the API.
- The JSON API and the API “Try it” playgroundaren’t included.
- The data is a snapshot — it refreshes only when the demo is rebuilt, not live from the database.
Everything else — the body map, progression ladders, coverage heatmap, exercise finder, and all anatomy/exercise/source pages — works fully. The full app (live search + API + database) runs from the source on GitHub.
Semispinalis Cervicis
Deep posterior cervical muscle. Primary cervical extensor and segmental stabilizer.
Draft95%
Anatomy
- Origin
- Transverse processes of T1-T6
- Insertion
- Spinous processes of C2-C5
- Action
- Cervical extension, segmental stabilization
- Innervation
- Dorsal rami of cervical and upper thoracic spinal nerves
- Blood Supply
- Deep cervical artery
Movements (1)
| Movement | Joint | Role | Notes |
|---|---|---|---|
| Cervical Extension | Cervical Intervertebral Joints (C2-C7) | Primary | Greatest force-generating capacity |
Exercises (2)
| Exercise | Role |
|---|---|
| Prone Cervical Extension | Primary |
| Deep Neck Extensor Endurance | Primary |
Sources
- Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation — Anatomy of Semispinalis Cervicis — origin, insertion, action, innervation
- Muscles: Testing and Function with Posture and Pain — Manual muscle testing for Semispinalis Cervicis