Bây giờ chúng ta phần khí quản giữa cricoid và vòng đầu tiên khí quản. Móc kéo vòng cricoid trở lên. Membranacea-đoạn khí quản sau đó kiểm tra, mà không đi quá sâu vì điều này sẽ đưa chúng ta vào thực quản. | 88 Anterior Region Robbins Level VI - Superior Part chondrium are sectioned along the posterior margin of the thyroid cartilage Fig. . The thyroid cartilage is pulled up with a hook. We then proceed to separate the anterior wall of the piriform recess with an internal subperichondrial approach Fig. . We now section the trachea between the cricoid and the first tracheal ring. The hook pulls the cricoid ring upward. The pars mem-branacea of the trachea is then dissected without going too deep because this would take us into the esophagus. 9 Fig. Constrictor muscles of the pharynx of oropharynx if hypopharynx e esophagus 1 middle constrictor muscle of pharynx superior component 2 middle constrictor muscle of pharynx inferior component 3 apex of greater cornu of hyoid bone 4 inferior constrictor muscle of pharynx 5 cricopharyngeus muscle 6 Laimer s triangle 7 posterior pharyngeal raphe Fig. Larynx and hypopharynx intraluminal view I bl tongue base tp palatine tonsil e esophagus 1 glossoepiglottic vallecula 2 epiglottis 3 pharyngoepiglottic fold 4 aryepiglottic fold 5 cuneiform tubercle Wrisberg s tubercle 6 corniculate tubercle Santorini s tubercle 7 epiglottic tubercle petiolus 8 ventricular fold false vocal cord 9 anterior commissure 10 glottis 11 piriform sinus 12 Galen s loop 13 retrocricoid area 14 Killian s mouth 15 inferior constrictor muscle of larynx 16 apex of greater cornu of hyoid bone Dissection 89 SUPERIOR CORNU SUPERIOR LARYNGEAL a dissection of inferior constrictor muscle HYOID BONE dissection of trachea Fig. Exercise 8 laryngectomy 90 Anterior Region Robbins Level VI - Superior Part 9 We go up posteriorly as far as the arytenoid cartilages where we cut right through the mucosa and enter the hypopharynx Fig. . Still pulling the larynx upward we continue to section the hypopharyngeal mucosa keeping close to the larynx. The laryngectomy is concluded by transversely sectioning the mucosa of the glossoepiglottic .
