Page 61 - Edited - Webster HEAD AND NECK - part 2-Merge PDF

HN 255 THE PHARYNGEAL CONSTRICTOR HN 255
MUSCLES (1)

(A) There are THREE pharyngeal constrictor
(B) LONGITUDINAL SECTION
muscles, arranged
MUCOUS MEMBRANE 0000
like three bottomless
SUBMUCOSA-THE
SUPERIOR plant pots or PHARYNGO-BASILAR
disposable plastic FASCIA.
cups, one inside SUPERIOR INTERNALLY, the
another. “Steps” are smoothed
MIDDLE out by the mucous
The "overlaps" membrane which
are logically MIDDLE averlies a well-
arranged to developed connective
INFERIOR facilitate the passage tissue Aulomucosa-
of food/liquid from The PHARYNGO-BASILAR
top to bottom. INFERIOR FASCIA.

(C) OPENINGS

of vertical ANTERIOR
Strip of the plantpots HOWEVER, the three
SUPERIOR is cut away thus. CONSTRICTOR MUSCLES
This gap now ("plantpots")
affords communication DO NOT CORRESPOND
with three anterior IN A SIMPLE ONE
MIDDLE cavities, from above TO ONE WAY WITH
downwards: THESE THREE
THE NASAL CAVITY CAVITIES.
THE ORAL CAVITY
INFERIOR THE LARYNX.
PHARYNGEAL
TUBERCLE
(SHEET
RAPHE
(D) ALSO neither the
well as be congruent with neighbouring
edges of the excised structures, the anterior boundries
strip nor the upper SUPERIOR are to sculpted in a different way
and lower borders CONST R for each constrictor.
M.
of each muscle are NOTICE that
MIDDLE 1. Each constrictor in SKELETAL
simple contours. CONSTRICTOR muscle.
First, the posterior M. 2. Each constrictor is in fact
height of each muscle made of a right & left half,
INFERIOR
is greater than its CONSTRICTOR meeting posteriorly at the
M. pharyngeal RAPHE. This raphe
Anterior height. K.E.W. is suspended from The PHARYNGEAL

SECONDLY, in order to TUBERCLE of the basi-occipital
fit anatomical features bone ( ).
of the three cavities, as K.E.W.