Thyroid isthmus is usually located in ()
Anterior thyroid cartilage
B. Anterior cricoid cartilage
C. In front of the 1st to 3rd trachea cartilage
D. In front of the second to fourth trachea cartilage
E. In front of the 4th to 6th trachea cartilage
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Body surface projection of the top of the pleura ()
A. 2~3cm above the middle 1/3 of the clavicle
B. 2~3cm above the medial third of the clavicle
C. 2~3cm above the outer third of the clavicle
D. 2~3cm above the first rib
E. 1cm above the transverse process of the 7th cervical spine
What is the structure of the subclavian artery divided into three sections ()
A. Clavicle
B. 1st rib
C. Anterior oblique muscle
D. Middle oblique muscle
E. Pectoralis minor
Innervation of superior laryngeal nerve ()
A. Circumcision muscle and pharyngeal contractor
B. Subhyoid muscle
C. Throat mucosa above glottis
D. Laryngeal mucosa below the glottis
E. All larynx muscles except the crotch
Recurrent laryngeal nerve ()
A. Both sides hook around the subclavian artery and return to the neck
B. Go up the groove between the trachea and esophagus
C. Dominates all larynx muscles
D. Cross the inferior thyroid vein
E. None of the above
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