📖 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.
Upper Trapezius
Upper fibers of the trapezius. Elevates and upwardly rotates the scapula.
Draft95%
Anatomy
- Origin
- External occipital protuberance, medial superior nuchal line, ligamentum nuchae, C7 spinous process
- Insertion
- Lateral third of clavicle, acromion
- Action
- Scapular elevation, upward rotation; draws scapula backward; raises scapula by rotating clavicle
- Innervation
- Spinal accessory nerve (CN XI), with proprioceptive and motor contributions from C3-C4
- Blood Supply
- Transverse cervical artery, occipital artery
Movements (5)
| Movement | Joint | Role | Notes |
|---|---|---|---|
| Scapular Upward Rotation | Scapulothoracic Articulation | Primary | Pulls acromion superiorly |
| Scapular Elevation | Scapulothoracic Articulation | Primary | — |
| Scapular Protraction | Scapulothoracic Articulation | Stabilizer | — |
| Shoulder Flexion | Glenohumeral Joint | Synergist | Scapular upward rotation |
| Shoulder Abduction | Glenohumeral Joint | Synergist | Scapular upward rotation |
Exercises (37)
Sources
- Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation — Anatomy of Upper Trapezius — origin, insertion, action, innervation
- Muscles: Testing and Function with Posture and Pain — Manual muscle testing for Upper Trapezius