📖 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.

Deep Cervical Flexors

Longus colli and longus capitis. Deep stabilizers of the cervical spine. Longus colli has complex three-part fascicular anatomy (superior oblique, vertical, inferior oblique). Longus capitis is the primary craniocervical flexor.

Draft95%

Anatomy

Origin
Longus colli: anterior tubercles C3-C5 (superior oblique), bodies C5-T3 (vertical), transverse processes C5-C6 (inferior oblique); Longus capitis: anterior tubercles C3-C6 transverse processes
Insertion
Longus colli: anterior tubercle of C1 atlas (superior oblique), bodies C2-C4 (vertical), bodies C5-C6 (inferior oblique); Longus capitis: basilar part of occipital bone (inferior surface)
Action
Craniocervical flexion (capitis at C0-C1), cervical flexion (colli at C2-C3), segmental cervical stabilization
Innervation
Longus colli: anterior rami C1-C6; Longus capitis: anterior rami C1-C5
Blood Supply
Segmental branches of ascending cervical artery

Movements (2)

MovementJointRoleNotes
Upper Cervical FlexionAtlantooccipital JointPrimaryLongus capitis: 11.1% CSA increase at C0-C1; longus colli: 17.4% at C2-C3
Cervical FlexionCervical Intervertebral Joints (C2-C7)PrimarySegmental control

Exercises (12)

ExerciseRole
Deep Neck Flexor Training (Chin Tucks with Pressure Biofeedback)Primary
Upper Cervical (Suboccipital) Exercise with ReleasePrimary
Supine Chin Tuck with LiftoffPrimary
Sitting Craniocervical Flexion with Oblique Band ResistancePrimary
Chin Tuck with OverpressurePrimary
Seated Cervical Flexion AROMPrimary
Isometric Neck Strengthening (4 Directions)Primary
Cervicothoracic Self-MobilizationStabilizer
Deep Neck Extensor EnduranceStabilizer
Upper Cervical Rotation DrillStabilizer
Upper Cervical Extension Controllengthening
Cervical Protraction Awarenesslengthening

Sources