Anterior Triangle

Question 1

What nerve is most likely severed in a shallow knife wound just behind the sternocleidomastoid muscle and above the clavicle?

Answer 1

Supraclavicular

Question 2

Which muscle is innervated by a branch of the ansa cervicalis?

Answer 2

Sternohyoid

Question 3

What is the layer of encircling cervical fascia that splits to enclose sternocleidomastoid and trapezius muscles?

Answer 3

Superficial layer of deep fascia

Question 4

Which of the following is a dorsal ramus of a spinal nerve?

Answer 4

Greater occipital n.

Question 5

What is true of the inferior thyroid arteries?

Answer 5

They often supply all four parathyroid glands

Question 6

What nerve has been cut if a patient loses sensation from the skin over the angle of the jaw following a stab wound?

Answer 6

Great auricular n.

Question 7

In which triangle does the superior branch of the ansa cervicalis separate from the hypoglossal nerve?

Answer 7

Carotid

Question 8

What important structure is revealed bilaterally in the tracheoesophageal groove at the level of the thyroid gland?

Answer 8

Recurrent laryngeal nerve

Question 9

Which nerve is most likely to be damaged during the excision of the lower pole of the thyroid gland?

Answer 9

Recurrent laryngeal

Question 10

Which muscle is NOT innervated by the ansa cervicalis?

Answer 10

Thyrohyoid

Question 11

What nerve was involved in causing a hoarse voice due to pressure from an enlarged lymph node in the tracheoesophageal groove?

Answer 11

Recurrent laryngeal branch of vagus

Question 12

Which muscle of the neck provides the best area of approach to the internal jugular vein for venous catheterization?

Answer 12

Sternocleidomastoid

Question 13

At what level can an emergency airway be created below the vocal cords with minimum danger of hemorrhage?

Answer 13

Just below the cricoid cartilage

Question 14

In which triangle of the neck will a surgeon make an incision to access the thyroid gland?

Answer 14

Muscular

Question 15

What nerve must be locally anesthetized for a biopsy of a mole along the anterior border of the sternocleidomastoid muscle?

Answer 15

Great auricular

Question 16

What nerve may have been injured if a patient complains of hoarseness and weakness of voice after thyroid surgery?

Answer 16

External branch of the superior laryngeal

Question 17

Which structure is NOT located in the superficial fascia of the neck?

Answer 17

Omohyoid muscle

Question 18

What cervical triangle does the superior belly of the omohyoid form the anterior border of?

Answer 18

Carotid

Question 19

What structure is NOT innervated by the cervical plexus?

Answer 19

Platysma

Question 20

Which vessel is most likely cut in a shallow stab wound in the omoclavicular triangle?

Answer 20

External jugular vein

Question 21

Which area receives NO nerve fibers from the cervical plexus?

Answer 21

Skin over the external occipital protuberance

Question 22

What muscle was likely damaged during birth if a child has a permanently tilted head posture with the right ear near the shoulder?

Answer 22

Sternocleidomastoid

Question 23

Irritation of the diaphragm may create referred pain in the shoulder due to the phrenic nerve sharing spinal segments with what cutaneous nerve?

Answer 23

Supraclavicular nerve

Question 24

What statement about the cervical plexus is true?

Answer 24

It consists solely of ventral rami of spinal nerves