Throat Flashcards
Describe the borders of the anterior triangle
Midline
Mandible
SCM
Roof - Investing fascia
Floor - Visceral fascia
Name the four subdivisions of the anterior triangle
Carotid Triangle
Submental triangle
Submandibular triangle
Muscular triangle
What are the borders of the Carotid Triangle?
Medial border of SCM
Posterior belly of Diagastric
Superior border of Omohyoid
What are the contents of the Carotid Triangle?
Common Carotid (bifurcates within at C4)
IJV
Hypoglossal and Vagus
Baroreceptors
What is contained within the Submental triangle?
Submental lymph nodes
What is contained within the Submandibular triangle?
Submandibular salivary glands
Lymph nodes
Facial Artery and Veins
What is contained within the Muscular Triangle?
Infrahyoids
Pharynx
Thyroid
Parathyroid
Name the four Suprahyoid muscles
Stylohyoid
Digastric
Myelohyoid
Geniohyoid
Name the four infrahyoid muscles
Omohyoid
Sternohyoid
Thyrohyoid
Sternothyroid
What are the borders of the Posterior Triangle?
Posterior SCM
Anterior Trapezius
Clavicle
Roof - investing fascia
Floor - prevertebral fascia
Name three muscles in the Posterior Triangle
Omohyoid
Levator Scapulae
Scalenes
Name three vessels in the Posterior Triangle
EJV Superficially
Transverse Cervical
Suprascapular
Name the nerves in the Posterior Triangle
Accessory nerve
Cervical plexus
Trunks of Brachioplexus
Name three distinguishing features of the cervical spine
- Triangular Vertebral Foramen
- Bifid Spinous Process
- Transverse Foramina
(spinal nerves exit above level)
Describe the anatomy of the Atlas (C1)
Articulates with the occiput and C2
No vertebral body or spinous process
Anterior arch has a facet for articulation with the dens
Describe the anatomy of the Axis (C2)
Has Dens (Odontoid Process) - medial atlanto-axial joint
Superior articular facets - lateral atlanto-axial joints
Name 6 ligaments of the Cervical Spine
Anterior Longitudinal Posterior Longitudinal Ligamentum Flavum Interspinous Nuchal ligament Transverse ligament of atlas
The Hyoid bone doesn’t articulate with any bones. Describe its anatomy
Greater Horn
Lesser Horn
Body
How is the Hyoid Bone damaged?
Strangulation
The Superficial Cervical Fascia lies between the dermis and Deep Cervical Fascia. Name the 5 contents
Neurovascular supply to the skin Superficial Veins Superficial Lymph Nodes Fat Platysma Muscle
Name the three Deep Cervical Fascial Layers
Investing
Pre Tracheal
Pre Vertebral
Describe the investing layer of Deep Cervical Fascia
Most superficial, surrounding all structures in the neck
Splits around trapezius and SCM
Describe the pre-tracheal layer of Deep Cervical Fascia
Spans between Hyoid and Thorax and fuses with Pericardium
Muscular part - encloses infrahyoids
Visceral part - encloses thyroid, trachea, oesophagus
Posterior Visceral - buccopharyngeal
Describe the pre-vertebral layer of the Deep Cervical Fascia
Surrounds vertebral column/scalenes/prevertebral muscles
Anterolateral portion forms floor of the Posterior Triangle