1. Introduction to the Neck
Dan Topping, MD
Clinical Assistant Professor
Head and Neck Anatomy
February 20, 2008

2. The neck is a biomechanical wonder!
Connects the head to the trunk
Conduit for blood vessels, nerves, and hollow organs
All of these complicated structures are packed in a very narrow area that allows for a great deal of mobility for the head as it moves relative to the ground

7. Emergency Cricothyroidotomy
Step One: Transverse skin incision over CT membrane

8. Emergency Cricothyroidotomy
Step Two: Pop through the membrane and make some space

9. Emergency Cricothyroidotomy
Step Three: Create an orifice (straw, ballpoint pen, etc.)

10. Emergency Cricothyroidotomy
Improvise if you have to!

11. Flexes and rotates the head
Sternocleidomastoid
Flexes and rotates the head
Innervation is by CN XI

12. Moves and stabilizes the scapula, extends the head
Trapezius
Moves and stabilizes the scapula, extends the head
Innervation is by CNXI

13. Suprahyoid Muscles

14. Suprahyoid Muscles
(geniohyoid)

15. Infrahyoid (Strap) Muscles

16. Actions of Suprahyoid and Infrahyoid Muscles

17. Deep Cervical (Prevertebral) Muscles

18. Platysma Muscle of Facial Expression
Innervated by the cervical branch of the facial nerve

19. Innervation and Venous Drainage of the Neck

20. SVC Syndrome Occlusion of the SVC causes engorgement
of the superficial veins that drain the head
and neck (usually due to cancer)

21. Practical Application of Anatomy!
A little pressure to the
cervical plexus and...
VOILA!
Practical Application of Anatomy!

22. Deep Cervical Fascia Form the boundaries of compartments
Fascial spaces can communicate infection or fluid to other regions of the body
Used as a guide to surgical dissection
Allow the neck structures to glide past one another
Supports the thyroid, lymph nodes and blood vessels

23. Deep Cervical Fascia

24. Deep Cervical Fascia

25. Deep Cervical Fascial Spaces
Retropharyngeal - b/n prevertebral and buccopharyngeal
Pretracheal - b/n infrahyoids and trachea
Lateral pharyngeal - lat to pharynx and communicate with RP and SM spaces
Submandibular - below tongue
deep portion above mylohyoid
superficial portion below mylohyoid

26. Submandibular Space

27. Submandibular Abscess in a person with Diabetes

28. Posterior Triangle of the Neck

29. Anterior Triangle of the Neck

30. Anterior Triangle

31. Submental Triangle

32. Carotid Triangle

33. Muscular Triangle

34. Submandibular Triangle