Neck region Flashcards
Boundaries of Neck region?
Mandible, Superior Nuchal line (posterior), Top of sternum and along clavicle. Spinous process of C7
Superior Thoracic aperture opens directly into the
base of the neck
Axillary inlet, on each side of the superior thoracic aperture opens to the
upper limb
How is it that there are 7 cervical vertebra and 8 cervical spinal nerves?
C1 nerve enters above C1 vertebra and C8 exits below C7
What are the typical cervical vertebrae?
C3-C6
What are the general characteristics of typical vertebrae?
Small body, large vertebral foramen (often triangular) transverse foramen, Bifid spinous process
Atypical cervical vertebrae?
C7, C1, C2
What is C7 also called and why?
It is called vertebra prominens because it has a long non bifid spinous process. It also has the smallest transverse
What is C1 called?
The atlas
What joint does the Atlas make?
atlanto occipital joint
Describe the structure of the Atlas
Lacks a body, lacks a spinous process
What is the function of the Atlas?
Allows for flexion and extension and some lateral flexion. Anterior and posterior atlanto occipital membranes provide broad support and limit excessive movement
What is C2 called
The Axis
The AXIS forms the ________ joint with C1
atlantoaxial joint
how many articulations does the axis have with the atlas?
three
what are the structures of the axis?
has a body
Bifid spinous process
the Dens (odontoid process)
what is the function of the axis?
rotation between C1 and C2
Strong ligaments hold it in place
Where are the alar ligaments ?
from the side of the dens to the foramen magnum
Where is the transverse ligament of C1 and C2
extends between tubercles in medial aspect of C1 vertebra
Where is the cruciate ligament at C1 and C2
it is formed by a transverse ligament and its superior and inferior extensions between C2 and C1