📖 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.
Scalene Muscles
Three muscles (anterior, middle, posterior) of the lateral neck. Flex and laterally flex the cervical spine; accessory muscles of respiration. Also produce ipsilateral rotation.
Draft95%
Anatomy
- Origin
- Anterior: anterior tubercles C3-C6; Middle: posterior tubercles C2-C7; Posterior: posterior tubercles C5-C7
- Insertion
- Anterior: first rib (scalene tubercle); Middle: first rib (posterior to subclavian groove); Posterior: second rib (outer surface)
- Action
- Cervical flexion (anterior), lateral flexion, ipsilateral rotation; rib elevation during inspiration
- Innervation
- Anterior: anterior rami C4-C6; Middle: anterior rami C3-C8; Posterior: anterior rami C6-C8
- Blood Supply
- Ascending cervical artery
Movements (3)
| Movement | Joint | Role | Notes |
|---|---|---|---|
| Cervical Lateral Flexion | Cervical Intervertebral Joints (C2-C7) | Primary | Ipsilateral; all three |
| Cervical Flexion | Cervical Intervertebral Joints (C2-C7) | Secondary | Anterior scalene |
| Cervical Rotation | Cervical Intervertebral Joints (C2-C7) | Secondary | Ipsilateral |
Exercises (4)
| Exercise | Role |
|---|---|
| Supine Chin Tuck with Liftoff | Stabilizer |
| Cervical Protraction Awareness | Synergist |
| Seated Cervical Flexion AROM | Synergist |
| Mindfulness-Integrated Stretching | lengthening |
Sources
- Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation — Anatomy of Scalene Muscles — origin, insertion, action, innervation
- Muscles: Testing and Function with Posture and Pain — Manual muscle testing for Scalene Muscles