PREVERTEBRAL MUSCLES SCALENOVERTEBRAL TRIANGLE CERVICAL SYMPATHETIC CHAIN Dr.VANI.P.C ASSISTANT PROFESSOR DEPARTMENT OF ANATOMY
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PREVERTEBRAL MUSCLESSCALENOVERTEBRAL TRIANGLECERVICAL SYMPATHETIC CHAIN
Dr.VANI.P.C
ASSISTANT PROFESSOR
DEPARTMENT OF ANATOMY
1. Longus Colli
2. Longus Capitis
3. Rectus Capitis Anterior
4. Rectus Capitis Posterior
PREVERTEBRAL MUSCLES
LONGUS COLLI
1. Origin
2. Insertion
Upper part
Anterior tubercles of transverse process of C3-C5 vertebrae
Middle part
Anterior surface of bodies of C5-C7 & T1-T3 vertebrae
Lower part
Anterior surface of bodies of T1—T3 vertebrae
LONGUS COLLI - ORIGIN
LONGUS COLLI - INSERTION
Upper part
Anterior tubercles ofAtlas
Middle part
Anterior surface of bodies of C2-C4vertebrae
Lower part
Anterior tubercle of transverse process of C5-C6 vertebrae
LONGUS CAPITIS
1. Origin
2. Insertion
ORIGIN
Anterior tubercles of transverse process of C3-C6 vertebrae
INSERTION
Inferior surface of basiocciputon either side of pharyngeal tubercle
LONGUS CAPITIS
LONGUS – NERVE SUPPLY
Ventral rami of C2C3C4C5C6Cervical nerves
LONGUS – ACTION
RECTUS CAPITIS ANTERIOR
1. Origin
2. Insertion
3. Action
ORIGIN
Anterior Surface Of Lateral Mass Of Atlas
Root Of Transverse Process Of Atlas
INSERTION
Inferior Surface Of the basi-occiput infront of the Occipital condyles
RECTUS CAPITIS ANTERIOR
RECTUS CAPITIS ANTERIOR – ACTION
RECTUS CAPITIS LATERALIS
1. Origin
2. Insertion
3. Action
ORIGIN
Upper Surface Of Transverse Process Of Atlas
INSERTION
Inferior Surface Of the Jugular process Of Occipital Bone
RECTUS CAPITIS LATERALIS
RECTUS CAPITIS LATERALIS – ACTION
RECTUS CAPITIS – NERVE SUPPLY
Loop of communication between the ventral rami of C1 & C2
1. Scalene anterior
2. Scalene medius
3. Scalene posterior
PARAVERTEBRAL MUSCLES
ORIGIN
Cervical vertebrae-anterior tubercle C3 to C6
INSERTION
Scalene tubercle – First rib
SCALENE ANTERIOR
ORIGIN
Cervical vertebrae-Posterior tubercle
INSERTION
Upper surface of first rib
SCALENE MEDIUS
ORIGIN
Cervical vertebrae-Posterior tubercle C4 to C6
INSERTION
Outer surface of second rib
SCALENE POSTERIOR
SCALENE – NERVE SUPPLY
Ventral rami of C4C5C6Cervical nerves
SCALENE – ACTIONS
SCALENOVERTEBRAL TRIANGLE
BOUNDARIES
Medial
Lateral
Apex
Base
Posterior wall
SCALENOVERTEBRAL TRIANGLE
CONTENTS
First part of vertebral artery
Cervical symphathetic chain-middle & inferior cervical ganglion
Ansa subclavia
SCALENOVERTEBRAL TRIANGLE
STRUCTURES IN FRONT
Inferior thyroid artery
Thoracic duct on left side only
CERVICAL SYMPATHETIC CHAIN
1. No white rami communicantes
2. Grey rami communicantes to each 8 cervical nerves
3. ORIGIN: Lateral horn cells of T1-T5
CERVICAL SYMPATHETIC CHAIN
SUPERIOR CERVICAL GANGLIAInfront of C2&C3 vertebrae
Branches:1. Gray rami communicantes: to
Lower 4 cranial & upper 4 cervical nerves
2. Visceral: Laryngo-pharyngeal & cardiac
3. Vascular: internal & external carotid plexus
SUPERIOR CERVICAL GANGLIA
Branches:
1. External petrosal nerve
2. Deep petrosal nerve
3. Communicating branch to ciliary ganglion
4. Nervus conarii
MIDDLE CERVICAL GANGLIAInfront of C6 vertebrae
Branches:1. Gray rami communicantes: to upper C5
& C6 nerves
2. Vascular: inferior thyroid plexus & ansasubclavia (it forms a loop around subclavian artery then joins the inferior ganglion
3. Visceral: tracheal, oesophageal & cardiac
INFERIOR CERVICAL GANGLIAInfront of neck of first rib
Stellate ganglion
Branches:1. Gray rami communicantes: to C7 & C8
nerves
2. Vascular: vertebral and subclavian plexus
3. Visceral: cardiac
HORNER’S SYNDROME
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