Exploration of the tracheoesophageal groove at the level of the thyroid gland would reveal what important structure bi-laterally
A. Cervical sympathetic trank
B. Phrenic nerve
C. Pyramidal lobe
D. Recurrent laryngeal nerve
E. Superior thyroid artery
29.甲状腺上动脉起自
A. 锁骨下动脉
B. 颈内动脉
C. 颈外动脉
D. 颈总动脉
E. 甲状颈干
斜角肌间隙
A. 由前、中、后斜角肌围成
B. 由中、后斜角肌和第1肋上面围成
C. 由前、中斜角肌和第1肋上面围成
D. 间隙内有锁骨下静脉和臂丛穿出
E. 间隙内有锁骨下动、静脉
30.甲状腺下动脉起自
A. 锁骨下动脉
B. 颈内动脉
C. 颈外动脉
D. 颈总动脉
E. 甲状颈干