Page 77 - Edited - Webster HEAD AND NECK - part 2-Merge PDF

HN269 THE CRICO-VOCAL MEMBRANES HN269

THE PAIRED CRICO-VOCAL MEMBRANES are FIBRO-ELASTIC.
Each is attached to the upper margin of about half the circumference of the
ARCH of the cricoid cartilage.
(A)
(I) LATERAL THE UPPER IS FREE and extends
VIEW BORDER from SURFACE of the junctia
the INTERNAL Laminae just below of the
of the two thyroid epiglottis to the of the
the attachment EPIGLOTTIS arytenoid certilege side.
VOCAL
PROCESS of its
own

RIGHT CRICO-
VOCAL MEMBRANE.
CRICOID Note The SPACE
ARCH (black) between the free
(A) upper borders: the
GLOTTIS Those
borders are thickened to
form The VOCAL
LIGAMENTS.

LEFT CRICO-VOCAL
MEMBRANE (II) SUPERIOR
VIEW

(A)
JUNCTION OF THYROID
(IV) SCHEMATIC CORONAL SECTION LAMINE.
(A) – (A) MUCOUS MEMERANE & SUB-MUCOSA CRICO-VOCAL
FILLS THE GAPS BETISEEN SKELETAL ELEMENTS. LIGAMENT
EPIGLOTTIS (upper, free border
of membrane)
LEFT
MUCOUS HYOID BONE
MEMBRANE ARYTENOID
THYRO-HYOID CARTILAGE
SUB-MUCOSA
(VASCULME, & WITH MEMBRANE LEFT
MUCOUS GLANDS) CRICO- (III) SCHEMATIC LATERAL
VOLAL VIEW
MEMBRANE

THYROID
LAMINA
(V) SUPERIOR VIEW IN
THE LIVING: THE
VOCAL FOLDS APPEAR
K.E.W.
WHITE: THERE IS NO
VASCULAR SUB-
CRICO-THYROID KEW MUCOSA. THEY ARE
GLOTTIS SEPARATED BY
MEMBRANE
THE CLEFT OF
THE GLOTTIS,
LEADING TO THE
TRACHEA. OTHER
CRICOID
STRUCTURES
ARCH
ARE PINK.
VOCAL FOLD
VOCAL FOLDS: MUCOSA WITH VOCAL FOLD
STRATIFIED SQUAMOUS, NON-
KERATINISING EPITHELIUM APPLIED
TO CRICO-THYROID THE MEMBRANES GLOTTIS
WITH ⸫ NO SUB-MUCOSA. THE VOCAL
FOLD APPEARE WHITE IN THE LIVING. ARYTENOLD
(COVERED WITH MUCOUS MEMBRANE
CARTLAGES
& SUB-MUCOSA).