Bones and Joints of the Neck Flashcards
What is the general shape of the neck?
Cylinder
What does the neck link together?
Head above
Thorax below
What parts of the body does the neck communicate with?
Back
Upper limb
How does the neck communicate with the upper limb?
Brachial plexus
Subclavian artery
What are the three Vs of the neck?
Vertebral column
Visceral column
Vascular column
What is the vertebral column?
Large mass of muscle around vertebrae
In gutter between transverse and spinous processes
What is the muscle group called in the vertebral column?
Post-vertebral muscles
What is the function of the post-vertebral muscles?
Maintain position of head
What are the superficial muscles of the neck?
Sternoclydomastoid
Trapezius
What are the attachments of the three scalene muscles?
Transverse process
Top 2 ribs
What is the function of the scalene muscles?
Accessory muscles of respiration > lift ribs
Compared to the post-vertebral muscles, how do the pre-vertebral muscles differ in size and number?
Smaller
Fewer
What is in the visceral cylinder?
Trachea
Oesophagus
Thyroid gland
Which nerve is the visceral cylinder associated with?
Recurrent laryngeal nerve
What is the name of the fascia around the sternoclydomastoid and trapezius?
Investing layer
What structure is formed when the fascia around the trapezius fuses to the spinous process?
Nuchal ligament
What is the fascia surrounding the thyroid called?
Pre-tracheal layer
Where is the vascular cylinder located?
Laterally on either side of visceral cylinder
What is in the vascular cylinder?
Common carotid artery
Internal jugular vein
Vagus nerve behind
Is the fascia around the internal jugular vein thinner or thicker than that around the common carotid artery?
Thinner, because veins stretch with increases in blood volume
Is the internal jugular vein inside or outside the carotid sheath?
Outside
What fascia surrounds the pre-vertebral muscles?
Pre-vertebral layer
What is created between the various fascia of the neck?
Vertical potential spaces
What can track along the potential spaces between the fascia of the neck?
Infection
What are the five regions of the neck?
Posterior 1. Back of neck/vertebral region 2. Posterior triangle 3. Sternomastoid region Anterior 4. Anterior triangle 5. Root of neck
What makes up the vertebral region of the neck?
Vertebrae
Post-vertebral muscles
What are the borders of the posterior triangle of the neck?
Apex = mastoid process
Posterior border = trapezius
Anterior border = sternoclydomastoid
Base = clavicle
What divides the anterior and posterior triangles of the neck?
Sternomastoid region
What is deep to the sternoclydomastoid?
Common carotid artery
Internal jugular vein
Lacerations to muscle can damage vessels
Which nerve comes out of the posterior border of the sternoclydomastoid muscle to innervate the trapezius?
CN XI = accessory nerve
Which area of the neck communicates with the thorax?
- Root of neck
What passes through the root of the neck?
Major vessels pass up to head/down to upper limb
How many vertebrae make up the cervical spine?
7
Why is the trachea surrounded by a series of incomplete rings of cartilage?
To maintain lumen
What is the Adam’s apple?
Angle of thyroid cartilage
What does the hyoid bone provide attachments for?
Supra- and infra-hyoid muscles
What is the function of thee supra- and infra-hyoid muscles?
Muscles of floor of mouth
Muscles continuing to sternum
What is the shape of the a neonate’s spine?
C shaped
Where are the primary curves maintained in the spine?
Thoracic
Sacral
When does the secondary lordosis in the cervical spine start to develop?
At 6 months, when baby starts to be able to support head
When does the cervical spine start to deteriorate and why?
In older age because of degenerative processes
What is the function of post-vertebral muscles?
Resist gravity
Extend head on neck
Extend cervical spine
Help maintain cervical lordosis
Where is the centre of gravity of the head?
Pituitary fossa
Where is the axis of rotation of the head?
Occipital condyles
How do degenerative changes in the post-vertebral muscles contribute to a change in posture?
Degenerative change > loss of tone
At what angle are the pedicels to the body of the cervical vertebra?
45 degrees
Compared to vertebrae in other areas of the spine, what is the size of the cervical vertebral body?
Quite small
What is the lip projecting upwards on the lateral margins of the body of vertebrae C3 to C6?
Uncinate process
What is the function of the uncinate process?
Encapsulates intervertebral discs to some extent
Keeps range of cervical spine primarily in sagittal plane
Partly aids in flexion and extension