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NS4

NS4
Lecture 4 of 63 in the Neuroscience Module

"Cervical Spine, Cords And Nerves" [Anatomy]

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  • 6 not 7 questions. 3 from skantha, 3 from robin

Ns4 Cervical Spine Cords And Nerves Ns4 Cervical Spine Cords And Nerves Presentation Transcript

  • Cervical Spine, Meninges, Surface Anatomy Dr. Skantha Kandiah MBA, MSc (NUI), MB BCh BAO (NUI), LRCP & SI Senior Lecturer in Anatomy and Lecturer in Healthcare Management RCSI
  • Surface Anatomy
    • Hyoid Bone C3
    • Thyroid Cartilage C4
    • Cricoid Cartilage C6
    • Cricothyroid membrane – what use?
    • Trachea, suprasternal notch
    • Normal for trachea to be off centre?
    • Carotid pulse – upper border of the thyroid cartilage
  • Cervical Vertebrae
    • 7 Cervical Vertebrae
    • 8 Cervical Spinal Nerves, Why?
    • C 3,4,5,6 – typical – bifid spines
    • C 7 – slightly atypical – non-bifid spine
    • C 1,2 – atypical
    • C7 – vertebrae prominens – how do you find it?
  • Cervical Vertebrae
    • Transverse process – foramen transversarium – vertebral artery passes through, except for C7 (only vertebral vein)
    • Transverse process has 2 tubercles – anterior and posterior
    • Anterior tubercle – scalenus anterior attaching to scalene tubercle of 1 st rib
    • Posterior tubercle – scalenus medius
  • Joints
    • C1-C2 Atlantoaxial joint – rotation
    • Atlanto-occipital joint – nodding
    • DENS – connects C1 and C2 – no joint
    • Transverse part of cruciate ligament between DENS and Spinal Cord
    • What happens in hanging?
    • Secondary cartilagenous joints between all other cervical vertebrae
  • Veins
    • Internal Jugular Vein – from midway between the tip of the mastoid process and the angle of the mandible, to the SCJ
    • External Jugular Vein – from the angle of the mandible to the middle of the clavicle
    • EJV drains into the SCV
    • IJV and SCV form brachiocephalic
    • Both BCV join to form the SVC
  • More…..
    • Subclavian artery – branches?
    • 1 st part of subclavian artery: vertebral artery, thyrocervical trunk (inf thyroid, superficial cervical, suprascapular), internal thoracic artery
    • 2 nd part: Costocervical trunk (superior intercostal, deep cervical)
    • 3 rd part branches? NONE
    • Foramen Magnum – what goes through it?
    • What is the brain stem?