Unit 4 Basic Osteology of Vertebral Column, Sternum and Ribs Flashcards
What osseous modification is observed to the front of the anterior arch of C1?
Anterior Tubercle
What is observed on the back of the anterior arch of C1?
Fovea Dentis
What attaches behind the anterior arch of C1?
Lateral Mass
What is the name of the rounded elevation on the medial aspect of the lateral mass of C1?
Tubercle of the transverse atlantal ligament
What is identified in the midline at the back of the posterior arch of C1?
Posterior Tubercle of the posterior arch
What superior surface modification of the posterior arch of C1 present near the lateral mass?
Groove/Sulcus for the vertebral artery
What superior surface modification is present near the posterior tubercle of the posterior arch of C1?
Arcuate rim
What attaches to the arcuate rim of the posterior arch of atlas and to the superior articular process of the lateral mass of atlas?
Complete Ponticulus Posticus
Based on the amount of bony union between the superior articular process and the arcuate rim of C1 what structure will form?
incomplete Ponticulus Posticus
or
Complete PP
What names are given to the opening formed by the Ponticulus Posticus?
Arcuate Foramen
or
Retroarticular Canal
What is observed on the undersurface of the posterior arch of C1?
Inferior vertebral Notch
What is the name given to the anterior part of the transverse process of C1?
Costal element
What is the name given to the posterior part of the transverse process of C1?
True Transverse process
What is the distal most part of the transverse process of C1?
Posterior Tubercle of the transverse process
What unique vertebral body modification is characteristic of C2?
Dens/Odontoid process
What feature is identified on the anterior surface of the odontoid process of C2?
Facet for Fovea Dentis
What feature is identified on the posterior surface of the odontoid process of C2?
Groove for the transverse atlantal ligament
What feature is identified on the superolateral margins of the odontoid process of C2?
Attachment sites for alar ligaments
What feature is identified on the tip of the odontoid process of C2?
Attachment site for the apical-dental ligament.
What feature is identified on the anterior surface of the vertebral body of C2
Anterior Lip
What feature is identified on the posterior surface of the inferior epiphyseal rim of C2?
Posterior Lip
What features are present at the lateral margins of the inferior epiphyseal rim of C2?
Right at Left lateral grooves
What features arise from the posterolateral margins of the vertebral body of C2?
Pedicles
What lies on the upper surface of the pedicle of C2?
Superior Articular process
What is the location of the superior vertebral incisure/notch of C2?
On the lamina-pedicle junction
What feature is identified on the lower surface of the pedicle of C2?
Inferior vertebral notch/Incisure
What is the location of the inferior articular process of C2?
On the lamina-pedicle junction behind the inferior vertebral notch.
What osseous parts of the typical cervical transverse process are present on C2? Give location for each as well.
Costal element—–Anterior
Posterior tubercle—- Most Distal
True transverse process—-Posterior
What is the characteristic appearance of the C2 spinous process in humans?
Bifid
What are the modifications of the superior epiphyseal rim of a typical cervical?
Anterior Groove
Posterior Groove
Right and Left Uncinate process
What are the names of the lateral modifications of the superior epiphyseal rim of a typical cervical? give all names.
Uncinate process Unciform process uncovertebral process uncus lateral lip
What are the modifications of the inferior epiphyseal rim of a typical cervical?
Anterior lips
Posterior lips
Lateral grooves
What attaches to the posterolateral margin and in the center of a typical cervical vertebral body?
Pedicle
What bony feature is attached to the posterior end of the pedicle?
Articular Pillar
What is located at the top and bottom of the articular pillar?
Superior articular process
Inferior articular process
What is the name of the surface feature observed between the ends of the articular pillar?
Groove/Sulcus for the dorsal ramus of a cervical spinal nerve.
What bone feature is attached to the posterior part of the articular pillar?
Lamina
What ligament attaches to the lamina of a typical cervical?
Ligamentum Flavum
Ossification of the ligamentum flavum at the attachment site on the lamina will result in what feature?
Para-articular process
What parts of the typical cervical vertebra is the transverse process attached to?
Vertebral Body
Articular Pillar
List, in order, the osseous parts of the typical cervical vertebra transverse process beginning at the vertebral body.
Costal element Anterior tubercle Costotransverse bar Posterior Tubercle True Transvers process
What bony feature connects the anterior and posterior tubercles of a typical cervical transverse process?
Costotransverse bar
or
intertubercular lamina
What is the name given to the superior margin of the costotransverse bar?
Sulcus for the Ventral Primary Ramus of a cervical spinal nerve.
What is the name given to the modifications of the anterior tubercle of the C6 transverse process?
Carotid Tubercle
What is the main difference between a Caucasian and African-Americans cervical spinous processes?
Caucasian—Bifid
African-Americans— non-bifid
What surfaces are present on the superior epiphyseal rim of the vertebral body of C7?
Anterior groove
Posterior groove
Uncinate process
What is the appearance of the inferior surface of the vertebral body of C7?
Typically Flat
lacking Anterior and Posterior lips
What are the osseous parts of the transverse process of C7?
Costal Element Anterior tubercle Costotransverse bar Posterior tubercle True transverse process
What are the features of the spinous process of C7?
Long
Horizontal
Non-Bifid
What features will allow discrimination between T2-T4 and T5-T8 segmental groups?
Vertebral Body
Transverse process
Articular process
Spinous process
On cranial view, what is the outline of the vertebral body for the T2-T4 groups?
Vertebral body will have bilaterally convex sides.
On cranial view, what is the outline of the vertebral body for the T5-T8 group?
The left side of the vertebral body will be flattened, the right side convex.
What is the name given to the left side appearance of the vertebral body of T5-T8?
Aortic impression
What part of the vertebral body is most influenced by the aorta at T5-T8?
The left side Superior and Inferior epiphyseal rims
What is present at the tip of the transverse process of a typical thoracic?
Transverse Tubercle
What is the distance between the transverse tubercles in the typical thoracic region?
From T2 each Transverse diameter becomes shorter as the transverse processes angle more posterior.