l820 



HUMAN ANATOMY 



The glottic region extends from the free edges of the false cords above to 

 those of the true ones below. The narrowest part of the larynx, the rima glottidis or 

 chmk of the larynx, is the interval between the true cords in front and the arytenoid 



Fig. 1 546. 



Cartilage of epiglottis 

 Areolar tissue 



Mucous membrane covering epiglottis 

 Fissure between cartilages 

 of Santorini 



Cartilage of Santorini tubercle 

 Sterno-hyoid 



Thyro-hyoid 



Sinus Dvriformis 



Superior 

 cornu of hyoid (cut) 



Internal 

 jugular vein 



Sterno-mastoid 



Prevertebral muscles 



Fourth cervical vertebra 



Aryteno-epiglottic fold (cut) 

 Posterior wall of pharynx 



Anterior part of section across neck at level of fourth cervical vertebra, passing through upper part of superior 



aperture of larynx. 



cartilages behind. The false vocal cords (plicae ventriculares) are folds of mucous 

 membrane continuous with the sides of the supraglottic space. They are attached in 

 front to the inner side of the angle of the thyroid, above its middle, and behind to 

 the antero-external surface of the arytenoids. They are soft folds of mucous mem- 

 brane containing connective tissue (out of which a skilful dissector can manufacture 



Fig. 



1547- 



Superior hyoid cornu 

 /►a — Thyro-hyoid ligament 



Superior thyroid 

 cornu 



Body of hyoid 

 bone 



Thyro-hyoid 

 membrane 

 Mass of fat- 



Ventricle — 



Thyroid 



cartilage ^,' 



Crico-thyroid 

 membrane 

 Cricoid cartilage, 

 anterior arch 



Trachea 



Median sagittal section of larynx ; right side seen from 

 within. 



Cuneiform tubercle 



Tubercle of 

 Santorini 



False vocal cord 



Vocal cord 



Thyroid cartilage 



Cricoid car- Arytenoid 

 tilage, pos- cartilage 

 terior arch 



Ventricle 



Fig. 1548. 



Appendix o\ 

 ventricle 



False 

 vocal cord 



Arytenoid 

 cartilage 



Arytenoideus 



Glottis 



Vocal cord 



Larynx has been partly cut across at level between 

 false and true vocal cords ; upjier half of figure represents 

 under surface of upper piece, which is turned backward. 



a superior thyro-arytenoid ligament), many glands, and some fibres from the thyro- 

 arytenoid muscle. The true vocal cords (plicae vocales) arise a little below the false 

 ones, and run to the vocal processes of the arytenoid cartilages. They arise in both 



