Tutorial on the Head and Neck
These statements and questions are provided as a study aid to help you gauge your level of understanding of the region. A link to the Forum is provided if you are unsure of specific statements and questions and wish to discuss them.
1. The right sternocleidomastoid turns the face to the right.
Think of the attachments.
2. Trunks and cords of the brachial plexus are in the posterior triangle of the neck.
What are the boundaries of the posterior triangle?
3. The cutaneous branches of the cervical plexus emerge at the anterior border of the sternocleidomastoid.
Anterior or posterior?
4. The cervical plexus gives off only cutaneous branches.
5. The cervical plexus is formed by the ventral rami of C1-C4.
What plexus begins at C5?
6. The sternocleidomastoid has a dual nerve supply.
Don't forget the cervical contribution.
7. Which cervical fasciae did you remove during your dissection?
Think of the layers from superficial to deep.
8. The phrenic nerve and the subclavian vein pass between the anterior and middle scaleni muscles.
Where does C4 exit?
9. What is contained within the carotid sheath?
2 arteries, 1 vein, 1 nerve.
10. The only cranial nerves seen during dissection of the neck are IX, X, and branches of V.
There are more.
11. The infrahyoid muscles are supplied by a branch of the hypoglossal nerve (superior root of the ansa cervicalis).
Is it really a branch of C.N. XII?
12. Which muscles can elevate the hyoid bone?
What muscles attach superiorly?
13. The submanibular ganglion is attached to the lingual nerve.
What cell bodies does it contain?
14. The superior thyroid arteries are the only blood supply of the thyroid gland.
If there's a superior, there's probably an _______.
15. The parathyroid glands are usually located on the lateral margins of the lobes of the thyroid gland.
See Moore pp 520-522.
16. Extrinsic and intrinsic muscles of the tongue are supplied by C.N. XII.
C.N. XII has 'glossal' in its name.
17. Common sensation to the entire tongue is supplied by IX; taste fibers to the anterior two third are from VII, and to the posterior one third from IX.
Think again about the sensory supply.
18. Submandibular and sublingual glands open into the oral cavity at the sublingual papilla on either side of the frenulum.
See Moore p. 751.
19. The thoracic duct normally enters into the left junction of internal jugular and subclavian veins.
What drains here?
20. The enveloping (superficial) cervical fascia encloses the sternocleidonastoid and trapezius muscles.
Does it include C.N. XI?
21. The submandibular gland is closely related to the lingual artery.
Is it more closely related to another artery?
22. The superior laryngeal nerve supplies all intrinsic muscles of the larynx.
What about the recurrent nerve?
23. The buccinator, being a muscle of mastication, is supplied by V3.
Is it a muscle of mastication?
24. Terminal branches of the three divisions of the trigeminal nerve pass through forminae on the anterior aspect of the skull.
They lie along a vertical line from the chin to the forehead.
25. The parotid duct courses transversely across the face and enters the vestibule of the oral cavity opposite the second upper molar.
See Moore p. 670.
26. The buccal fat pad is not present in the infant.
Ever notice an infant's cheeks.
27. All openings in the face are surrounded by circular muscles.
What about the nose?
28. The muscles of the mastication are derived from the first branchial arch, and are supplied by the mandibular nerve.
Which arch is the mandibular arch?
29. The medial pterygoid is the only muscle that can assist in the opening of the jaw.
Medial or lateral?
30. Which gland is traversed by a cranial nerve and its branches.
It exits the stylomastoid foramen.
31. The chorda tympani carries taste and preganglionic sympathetic fibers.
John A. McNulty
Last Updated: March 18,2005
Created: November 1, 1995