Note 128 — Chapter IX
Reading edition
Rough diagram of larynx and trachea:—A, crico-thyroid space, laryngotomy; B B, dotted outline of thyroid isthmus and lobes, defines the upper and lower positions for tracheotomy; C, thyroid—D, cricoid cartilages; E, dotted outline of thymus gland in child of two years; F F, outline of clavicles and jugular fossa.