Anterior Triangle Flashcards
What nerve is most likely severed in a shallow knife wound just behind the sternocleidomastoid muscle and above the clavicle?
Supraclavicular
Which muscle is innervated by a branch of the ansa cervicalis?
Sternohyoid
What is the layer of encircling cervical fascia that splits to enclose sternocleidomastoid and trapezius muscles?
Superficial layer of deep fascia
Which of the following is a dorsal ramus of a spinal nerve?
Greater occipital n.
What is true of the inferior thyroid arteries?
They often supply all four parathyroid glands
What nerve has been cut if a patient loses sensation from the skin over the angle of the jaw following a stab wound?
Great auricular n.
In which triangle does the superior branch of the ansa cervicalis separate from the hypoglossal nerve?
Carotid
What important structure is revealed bilaterally in the tracheoesophageal groove at the level of the thyroid gland?
Recurrent laryngeal nerve
Which nerve is most likely to be damaged during the excision of the lower pole of the thyroid gland?
Recurrent laryngeal
Which muscle is NOT innervated by the ansa cervicalis?
Thyrohyoid
What nerve was involved in causing a hoarse voice due to pressure from an enlarged lymph node in the tracheoesophageal groove?
Recurrent laryngeal branch of vagus
Which muscle of the neck provides the best area of approach to the internal jugular vein for venous catheterization?
Sternocleidomastoid
At what level can an emergency airway be created below the vocal cords with minimum danger of hemorrhage?
Just below the cricoid cartilage
In which triangle of the neck will a surgeon make an incision to access the thyroid gland?
Muscular
What nerve must be locally anesthetized for a biopsy of a mole along the anterior border of the sternocleidomastoid muscle?
Great auricular
What nerve may have been injured if a patient complains of hoarseness and weakness of voice after thyroid surgery?
External branch of the superior laryngeal
Which structure is NOT located in the superficial fascia of the neck?
Omohyoid muscle
What cervical triangle does the superior belly of the omohyoid form the anterior border of?
Carotid
What structure is NOT innervated by the cervical plexus?
Platysma
Which vessel is most likely cut in a shallow stab wound in the omoclavicular triangle?
External jugular vein
Which area receives NO nerve fibers from the cervical plexus?
Skin over the external occipital protuberance
What muscle was likely damaged during birth if a child has a permanently tilted head posture with the right ear near the shoulder?
Sternocleidomastoid
Irritation of the diaphragm may create referred pain in the shoulder due to the phrenic nerve sharing spinal segments with what cutaneous nerve?
Supraclavicular nerve
What statement about the cervical plexus is true?
It consists solely of ventral rami of spinal nerves
