Page 69 - Edited - Webster HEAD AND NECK - part 2-Merge PDF

HN 262 (2) SUBDIVISIONS OF THE PHARYNX (2) HN262 (PART 2)

SCHEMATIC TRANSVERSE SECTIONS AT THE LEVELS INDICATED IN

HN 262 PART(1)
NASAL SEPTUM

MAXILLA

PHARYNGO-
NASO- BASILAR FASCIA (B) cf.
PHARYNX
(A) SUPERIOR CONSTRICTOR ORBICULARIS
M. ORIS M.
PHARYNGEAL RAPHE

ORAL BUCCINATOR
CAVITY M.
PALATO-
GLOSSA PTERYGOMANDIBULAR
FOLD RAPHE

PALATINE ORO-
TONSIL PHARYNX SUPERIOR CONSTRICTOR
M.
(C) HYOID BONE PALATO-
PHARYNGEAL
(BODY) FOLD. PHARYNGEAL

GREATER EPIGLOTTIS RAPHE
HORN
TRANSITION
ORO - to
HYPO- (D) cf.
PHARYNX MIDDLE THYROID CARTILAGE
CONSTRICTOR M.
EPIGLOTTIS
INFERIOR CONSTRICTOR VOCAL FOLD/ARY EPIGLOTTIC *
PHARYNGEAL RAPHE M. FOLD.
ENTRANCE TO
LARYNX
* The aryepiglottic
INFERIOR
fold is ABOVE the vocal fold. HYPO- CONSTRICTOR
PHARYNX (THYROID PART)

LARYNGEAL CAVITY → PHARYNGEAL RAPHE
TRACHEA.
(E) cf.
CRICOID CARTILAGE

CRICOID PART
OF INFERIOR NOTICE The sphincteric arrangement of
CONSTRICTOR OESOPHAGUS
the cricoid part of the inferior constrictor
around the oesophagus. Also, The only
complete ring of cartilage in the
BODY OF
VERTEBRA respiratory tree-The CRICOID
C6. CARTILAGE. Pressure on the cricoid
cartilage will compress the oesophagus
against vertebral body, C6.