The Neck

2. Mass of tissue near the bifurcation of the common carotid artery which detects changes in level of oxygen in the blood. (Hint: a chemoreceptor)
6. This muscle is located in the subcutaneous tissue of the neck
8. This cartilage protrudes to form the “Adam’s apple”.
9. This sign is associated with unilateral recurrent nerve injury.
10. The roots of the brachial plexus appear between these two (anterior and posterior) muscles.
12. Nerve endangered during neck surgery (especially during thyroidectomy)?
14. The external jugular vein terminates into this vein.
18. The carotid sheath contains the common and internal carotid arteries, the vagus nerve and this vein.

1. Mobile bone located at the level of C3.
3. The subclavian and internal jugular veins join to form this.
4. Number of pairs of thyroid veins are there.
5. The trachea bifurcates at this important level. (Hint: T4/5)
6. The accessory nerve is vulnerable to injury in this triangle.
7. This muscle is tested by turning the head against resistance.
11. This nerve supplies both the trapezius and sternocleidomastoid muscles.
13. Typical cervical vertebrae have this type of spinous processes.
15. The anterior rami of C1-... make up the roots of the cervical plexus.
16. The number of parathyroid glands usually present?
17. The superior and inferior laryngeal nerves are branches of this nerve. (Hint: the superior nerve arises near the superior end of the carotid triangle, and the inferior nerve is a continuation of the recurrent laryngeal nerve)