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The Neck: Musculature and Bony Anatomy

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Presentation on theme: "The Neck: Musculature and Bony Anatomy"— Presentation transcript:

1 The Neck: Musculature and Bony Anatomy

2 Bony Framework 7 cervical vertebrae Atlas (C1) Axis (C2) C3 - C7

3 Atlas 1 – Articular process 2 – Transverse process 3 – Posterior arch

4 Axis 1 – Dens/Odontoid process 2 – Spinous process

5 Cervical Vertebra 1 – Transverse foramen 2 – Body
3 – Vertebral foramen 4 – Transverse process 5 – Spinous process 6 – Articular process

6 Palpation of bony anatomy
Spinous process; vertebra prominens (C7) Transverse process

7 Palpation of Bony Anatomy
Hyoid bone Clavicle Thyroic cartilage Cricoid cartilage

8 Intervertebral Discs Annulus fibrosus Nucleus pulposus
Shock absorbers for spine


10 Nerves of the Cervical Spine
7 vertebrae, but 8 nerves Emerge above corresponding vertebra, except C8 nerve Brachial plexus – C5-T1 Myotomes and Dermatomes



13 NERVE MYOTOME C5 Shoulder Abduction C6 Elbow Flexion, Wrist Extension C7 Elbow Extension, Wrist Flexion C8 Thumb Extension, Ulnar Deviation


15 Muscles of the Neck MUSCLE ORIGIN INSERTION ACTION Trapezius
Occiput, Nuchal ligament, SP of C7-T12 Lateral clavicle, Acromion, Spine of scapula Extends, Ipsi lateral flex, Contra rotation Levator Scapulae TP C1-C4 Medial border of scapula Extends, Ipsi lateral flex, elevate scapula Sternocleidomastoid Sternal: manubrium Clavicular: medial 1/3 of clavicle Mastoid process Flexes, Ipsi lat flex, Contra rotation

16 MUSCLE ORIGIN INSERTION ACTION Anterior Scalene TP C3-C6 1st rib Ipsi lat flex, Elevate 1st rib Middle Scalene TP C2-C7 Posterior Scalene TP C5-C7 2nd rib Lat flex, Elevate 2nd rib Longus Colli and Longus Capitus Ant TP C1-C6 Occiput Flexion Rectus Capitis TP C1 Flexion, Lat flexion



19 The Neck: Common Injuries and Problems

20 Pain Generators Myogenic Discogenic Facet joint, Arthritic
Stenotic (central canal, neuroforamen) Neurogenic









29 Questions??

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