Posterior Triangle Flashcards
What artery is occluded due to hypertrophy of the anterior and middle scalene muscles in a muscular patient?
Subclavian
A stab wound above the left clavicle may injure which artery?
Subclavian artery
In subclavian steal syndrome, blood is stolen from which artery?
Vertebral
Which structure lies immediately anterior to the right anterior scalene muscle at its costal attachment?
Subclavian vein
What nerve must be protected during repair of the right subclavian artery?
Recurrent laryngeal
In a patient with scalenus anticus syndrome, which nerve must the surgeon be careful to spare during anterior scalene muscle transection?
Phrenic nerve
What nervous structure may have been injured if a patient has difficulty breathing after a central venous catheter attempt?
Phrenic nerve
Which nerve was cut if a patient experiences shoulder droop and inability to raise the hand after an abscess removal?
Accessory (XI)
Which nerve is derived from the dorsal primary rami of spinal nerves?
Greater occipital
What type of nerve fibers are interrupted by a primary thyroid tumor causing eyelid droop and pupil constriction?
Postganglionic sympathetic
During a deep cervical lymph node dissection, which structure is NOT encountered on the anterior surface of the anterior scalene muscle?
Middle trunk of the brachial plexus
The middle cervical sympathetic ganglion, recurrent laryngeal nerve, and parathyroid glands are closely related to which blood vessel?
Inferior thyroid artery
Which structure remains in place when the carotid sheath is retracted during neck surgery?
Cervical sympathetic trunk
Which hyoid muscle serves as an important landmark in both the anterior and posterior triangles of the neck?
Omohyoid
