cervical-outline - Cervical Vertebrae Page 1 of 7 ANAT...

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Cervical Vertebrae Page 1 of 7 ANAT 51210 Lectures 9, 10, 11, & 12 Fall 2011 Osteology Of The Cervical Vertebrae I. Region consists of seven vertebrae II. Typical cervical vertebrae: C3-C6 A. Vertebral body 1. Roughly rectangular in shape (in superior view) 2. Rather small in size, increasing in size from C2-C7 3. In lateral view, the anterior height is less than the posterior height B. Epiphyseal rims 1. Superior epiphyseal rim a. Concave from side-to-side, resulting in uncinate processes b. Convex from front-to-back, resulting in anterior and posterior grooves 2. Inferior epiphyseal rim a. Convex from side-to-side, resulting in lateral grooves b. Concave from front-to-back, resulting in anterior and posterior lips C. Pedicles 1. Project posterio-laterally from the vertebral body, at approximately a 45 o angle from a sagittal plane 2. Superior and inferior vertebral notches/incisures approximately equal in depth 3. Intervertebral foramen
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Cervical Vertebrae Page 2 of 7 a. Faces obliquely (at approximately a 45 o angle) and slightly inferiorly b. Nearly oval in shape c. Uncinate process helps form border of the intervertebral foramen d. Specific spinal nerve exiting the intervertebral foramen is identified according to the vertebra making up the inferior border of the IVF (excepting the eighth cervical spinal nerve, located between C7 and T1) D. Transverse processes 1. Costal element: projects laterally from the vertebral body and root of the pedicle a. Anterior tubercle: swelling of bone at the end of the costal element i. Carotid tubercle on C6: modified anterior tubercle, enlarged and scalloped to accommodate the common carotid artery b. Cervical rib: most frequent at C7; develops from the costal element 2. True transverse process: projects laterally from the lamina-pedicle junction a. Posterior tubercle: swelling at the end of the true transverse process 3. Costotransverse (aka, intertubercular) bar: connection between the anterior and posterior tubercles
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cervical-outline - Cervical Vertebrae Page 1 of 7 ANAT...

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