Page 75 - Edited - Webster HEAD AND NECK - part 2-Merge PDF

HN 267 COMPONENTS OF THE LARYNX (2) HN 267

(I) THE CRICOID CARTILAGE is the only complete ring (CRICOID
means. "ring-like") of carthage in the respiratory tract. It is customary to
compare it to a signet ring-the signet is the LAMINA.

LAMINA
ARCH
ARTICULAR AIRWAY SUPERIOR
FACET FOR LAMINA
INF.HORN VIEW
← ANT. ARCH OF THYROID
CARTILAGE
LATEICAL VIEW POSTERIOR VIEW
a
II THE ARYTENOID CARTILAGES (“Fumel shaped” cartilages)
TWO 3-SIDED PYRAMIDS, each 4-5mm high. Turs of the inferior corners of each
APEX are extended to foun APEX APEX
the MUSCULAR &
VOCAL PROCESSES.
MEDIAL
VOCAL LATERAL LATERAL
PROCESS MUSCULAR
PROCESS MUSCULAR MUSCULAR

BASE PROCESS PROCESS

VOCAL VOCAL PROCESS
PROCESS
EACH ARYTENOID CARTILAGE SITS
ON THE SHOULDER OF THE CRICOID SCHEMATIC ANTERIOR VIEW
LAMINA:
APEX
CRICOID
VOCAL
ARCH
VOCAL MUSCULAR PROCESS
PROCESS PROCESS
AIRWAY

ANTERIOR ARCH CRICOID
LAMINA MUSCULAR
LATERAL VIEW APEX PROCESS
K.E.W.
I POSTERIOR VIEW SUPERIOR VEW

(III) THE EPIGLOTTIS

This is a single entity and is a leaf or racket
shaped piece of ELASTIC CARTILAGE. Its
surface (especially posterior) is usually pitted:
these are hollows created by large mucous glands
in the overlying Submucosa.