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Sectional Anatomy

Describe the cervical spine. There are 7. Small in size as compared to other vertebrae.
Describe the thoracic spine. There are 12. Forms the posterior border of the thoracic cage.
Describe the lumbar spine. Usually 5, but 4 or 6 can be present. Forms the posterior border of the Abdominal cavity.
Describe the sacrum. 5 fused vertebral segments. Triangular in shape. Articulated with ilia on either side.
Describe the coccyx 4 small vertebral segments that form the caudal end of the spinal column. 3 or 5 segments can sometimes be seen.
What is the largest and heaviest portion of the vertebrae? Vertebral Body
What part of the vertebral column appears oval in the axial plane? Vertebral Body
What structure appears as a wedge in the sagittal plane? Vertebral Body
What is anterior to the vertebral foramen? Vertebral Body
What is the name of the first cervical vertebra that supports the skull? Atlas
What makes the Atlas unique? The body is missing and is replaced by the dens from the C2.
What is the name of the second vertebra? Axis
What is unique about the axis? It has a unique process, the dens, which extends upward to act as the body of C1.
Together the atlas and axis greatly increase what? greatly increase the ability to rotate the head
All cervical vertebrae have what? a foramen in each transverse process
Unlike lower vertebrae, the cervical spinous process is often what? bifid
What does "bifid" mean? 2
The main airway of the neck consists of what 3 parts? pharynx, larynx, and the trachea
What is the muscular tube of the upper airway called? Pharynx
What are the 2 main functions of the pharynx? passage for food and air
Name the 3 parts that the pharynx is divided into. Nasopharynx, Oropharynx, and the laryngeal pharynx(or hypopharynx)
Where is the nasopharynx located? posterior to the nasal cavity (just behind the nose)
Where is the oropharynx located? Posterior to the oral cavity and extends from the soft palate to the tip of the epiglottis (or level of the hyoid bone)
Where is the laryngeal pharynx (or hypo pharynx) located? Most inferior portion of the pharynx. Located posterior to the larynx. It extends from the tip of the epiglottis and is continuous with the esophagus.
Created by: 1413144626