Anterior Neck Flashcards
Where does the first come off?
The manubrium
How far poesteriorally does the cricoid cartilage project?
To C6
Borders of anterior triangle?
Anterior side of sternocleidomastoid, bottom of mandible, imaginary line down mid line of throat
Corotid Triangle borders?
Posterior belly of digastric muscle, superior omohyoid, sternocleidmastoid
This is where most of the branches of the external corotid come off
Submandibular triangle borders?
Between two bellies of digastric muscle
What does the Enveloping Fascia hold?
Turtlekneck of entire kneck. Splits to go around trapezius and sternomastoid
What does the Fascia of infrahyoids hold?
Fascia of the strap muscles
What does the Corotid Sheath hold?
Common corotid artery, internal corotid artery, vagus nerve
What does the pretracheal fascia hold?
1 Thyroid gland
2 Larynx/trachea
3 Pharynx/esophagus
Continuous with corotid sheath
`What does the Prevertebral fascia hold?
1 Prevertebral muscles
2 Anterior and posterior scalenes
3 Back muscles
Continuous with corotid sheath
Significance of retropharyngeal space?
If infections or fluids enter this space they will gain access to thorax. This can happen if your pharynx is pierced
Infrahyoid muscles
Also known as strap muscles: function is to move hyoid bone which is important in swallowing. Below hyoid bone: Omohyoid Sternohyoid Sternothyroid Thyrohyoid (C1-3, ansa cervicales).
Suprahyoid muscles
Above hyoid bone: Digastric (V, VII) Mylohyoid (V) Geniohyoid (C1) Stylohyoid (VII) Hyoglossus (XII)
How many cranial nerves are they?
12
Where does CN7 leave the skull?
Through the stylo-masto foramen (between the styloid and mastoid process)
