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8 Cards in this Set

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THYROID CARTILAGE

VS.

X-RAY
5. Clinical note: the thyroid cartilage may calcify and become visible on
X-ray
CRICOID CARTILAGE

-DESCRIBE
-"ARCH"
-"LAMINA"
B. Cricoid cartilage

1. Ring-shaped; consists of a narrow, anterior arch and a broad, posterior
lamina

2. Arch: located on a level with vertebra C6; joined to the thyroid carti-
lage by the median cricothyroid ligament and to the first tracheal ring
by the cricotracheal ligament

3. Lamina: quadrilateral plate; exhibits facets superiorly and inferolaterally
for articulation with the arytenoid cartilages and inferior cornua of the
thyroid cartilage, respectively
ARYTENOID CARTILAGES

-shaped like?
-muscular process?
-"vocal process"
-"aryepiglottic folds"
C. Arytenoid cartilages

1. Shaped like three-sided pyramids; their bases articulate with the supe-
rior surface of the lamina of the cricoid cartilage at synovial cricoaryte-
noid joints and, atop their apices, reside the corniculate cartilages

2. A muscular process extends laterally from the base and provides attach-
ment for muscles; a vocal process extends forward from the base and
provides attachment for the vocal ligament

3. The aryepiglottic folds extend between the arytenoid cartilages and the
epiglottis, and an interarytenoid fold extends between the arytenoid
cartilages themselves
EPIGLOTTIS
D. Epiglottis: cartilaginous plate shaped like an inverted teardrop; its narrow
stalk attaches in the groove formed by the thyroid laminae, about midway
along its length
VESTIBULE

-WHAT IS IT?
A. Vestibule
1. Portion of the laryngeal cavity between the laryngeal aditus and rima
vestibuli, the slitlike interval between the vestibular folds
VESTIBULE

LARYNGEAL ADITUS
A. Vestibule

2. The laryngeal aditus is the entrance into the larynx; it is bordered ante-
riorly by the epiglottis, posteriorly by the interarytenoid fold, and on
each side by an aryepiglottic fold
VESTIBULE

VESTIBULAR FOLDS
("false vocal cords")
-prominent mucosal ridges
a. Prominent mucosal ridges extending from the lateral borders of the
arytenoid cartilages to the groove formed by the thyroid laminae,
superior to the attachment of the epiglottis
VESTIBULE

VESTIBULAR FOLDS
("false vocal cords")
-vestibular ligaments
b. The vestibular folds contain the vestibular ligaments, thickenings
of the inferior edges of the quadrangular membranes; the quadran-
gular membranes are supportive, submucosal connective tissue sheets
extending between the free borders of the aryepiglottic and vesti-
bular folds