Triangles of Neck

1.A 65-years old woman came to the hospital with a swelling in front of the neck. On examination, it was found that the swelling was moving up and down during swallowing. After surgical excision of the swelling, she experienced hoarseness of her voice. With your knowledge of anatomy, answer the following questions:

• a) Name the structure involved.
• b) Briefly describe its coverings, external features, relations and blood supply.
• c) State the reasons for up and down movements of the swelling.
• d) What was the probable cause of hoarseness of voice following surgery.
• e) Add a note on the development of the structure involved

1.Boundaries and contents of carotid triangle

2.Sternocleidomastoid muscle

3.Boundaries and contents of posterior triangle of neck

4.Classify triangles of neck. Explain digastric triangle in detail

5.Describe the formation, termination, tributaries and clinical importance of external jugular vein

1.Branches of external carotid artery

2.Ansa cervicalis

3.Jugular foramen

4.Describe the formation, course, termination and tributaries of external jugular vein

5.Explain the anatomical basis of wrist drop

6.Branches of subclavian artery

7.Investing layer of deep cervical fascia

8.Carotid sheath

1.Distribution of cutaneous nerves to head and neck. Name the following

2.Nerves supplying digastric muscle

3.External jugular vein formed by

4.Transverse section through the neck at the level of cricoid (C6 vertebrae) cartilage Name the following

5.Formation of carotid sheath

1.The false capsule of the thyroid gland is formed by

• a) Investing layer of deep cervical fascia
• b) Pretacheal fascia
• c) Prevertebral fascia
• d) Carotid sheath

2.Which of the following statement/s is /are true about carotid sheath

• 1) Anteriorly related to ansa cervicalis.
• 2) Posteriorly related to cervical sympathetic chain
• 3) Extends from base of skull above to arch of aorta below
• 4) Thin over common carotid artery to allow expansion during increased venous return
• a) 1, 2, 3
• b) 1, 2
• c) 1, 4
• d) 1, 2, 4