Flashcards in Posterior Cervical Region Deck (20):
What is the carotid sheath?
Covering of the carotid artery part of pretracheal layer
Where does the carotid sheath arise and terminate?
Cranial base to the root of neck
What is the lesser supraclavicular fossa?
The space that inferiorly separates the 2 heads of the SCM
What forms the borders of the posterior cervical region?
Posterior SCM and anterior trapezius
What forms the roof of the posterior cervical triangle?
Investing layer of the deep cervical fascia
What forms the floor of the posterior cervical triangle?
Prevertebral layer of the deep cervical fascia
(Splenius capitis, levator scapulae, middle scalenes, posterior scalenes)
Where is the cervical plexus?
C1-C4 (anterior rami)
Where is the brachial plexus?
C5-T1 (anterior rami)
Where is the supraclavicular nerve root?
What are the 3 layers of the deep cervical fascia?
Investing, pretracheal, prevertebral
What is the purpose of deep cervical fascia?
Provide slipperiness for passage over each other
Where is investing layer located?
Around entire neck
Where is the pretracheal layer located and what does it enclose?
Encloses infra hyoid muscle, thyroid, trachea, and esophagus
What does prevertebral layer enclose?
Vertebral column, scalenes, longus colli, deep cervical muscles
What are the 2 heads of the SCM and what are they separated by?
Sternal and clavicular heads
Separated by lesser supraclavicular fossa
List the nerves of the cutaneous branch, their origins, and their supply
Lesser occipital nerve (C2): skin of neck and scalp
Great auricular nerve (C2-C3): skin and sheath over parotid gland
Transverse cervical nerve (C2-C3): skin over anterior cervical region
What types of fibers do the phrenic nerves have?
Motor, sensory, and sympathetic
Where do the phrenic nerves originate and what do they supply?
C3-C5: diaphragm, mediastinal pleura, pericardium
Veins of the posterior cervical region
External jugular vein