Triangle Of The Neck-1 Flashcards
What does the suprasternal space contain?
Connection betweeen the anterior jugular veins and maybe a lymph node
Lesser supraclavicular fossa
Site of access to internal jugular vein. Depression between sternal and clavicular heads of SCM
Nerve on the anterior surface of the anterior scalene
Phrenic nerve
The middle scalene is posterior to what?
Brachial plexus
Where does thee brachial plexus exit?
Between the anterior and middle scalenes
Where does the accessory nerve travel in the neck musculature?
Emerges from posterior border of SCM (b/t uppper and middle 3rd), runs across thee posterior triangle, passing deep to the trap. Covered only by skin and superficial fascia in the posterior triangle
Where do the sensory nerves to the neck emerge?
Posterior border of SCM at midpoint
What veins form the external jugular vein?
Posterior auricular and posterior branch of retromandibular vein
What is the course of the external jugular vein?
Emerges from parotid gland, runs vertically and superficially across SCM to clavicle, empties into the subclavian vein
Which nerve innervates the platysma?
Cervical branch of the facial nerve
Superficial layer of deep cervical fascia
Encircles the neck completely. Attaches to spinal processes or ligament up nuchae. Invests around the SCM/trap/inferior belly of omohyoid/infrahyoid. Yields the suprasternal space
Preetracheal Fascia
Muscular/visceral layers
Attaches to the hyoid. Fuses with fibrous pericardium.
Prevertebral Fascia
Contains the accessory nerve (b/t superficial and preverteebral fasica). Turns into 2 layers: posterior lamina and the alar fascia
Retropharyngeal space
Largest potential space behind the pharynx. Alar fascia divides it to form the danger space
Anterior triangle boundaries
Anterior border of SCM, mandible, anterior midline of the neck
