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LARYNX, Cricothyroid joints - Coggle Diagram
LARYNX
Functions:
CARTILAGINOUS structure
maintains the cavity open
reinforcement of the wall
EPIGLOTTIS
routes air and food into proper channels
allows the passage of air
VOCAL CORDS
role in speech
Description
:
HOLLOW organ
of the RESPIRATORY SYSTEM
has a SKELETON OF CARTILAGE
is lined by
MUCOUS MEMBRANE
Location
: :
Between the 3rd and the 6th cervical vertebra
Below: TRACHEA
Above:
in communication with LARYNGOPHARYNX
through
laryngeal inlet
anterior border.
covers the superior margin of epiglottis
lateral borders:
ary-epiglottic folds
posterior border:
inter-ary-tenoid notch
LIGAMENTS and MEMBRANES
Thyrohyoid membrane
between the
thyroid cartilage
and the
hyoid bone
anteriorly has
median thyrohyoid ligament
posteriorly has
lateral thyrohyoid ligament
presence of
triticeal cartilage
is pierced
Fibroelastic membrane
Quadrangular membrane
upper part
between
epiglottis
arytenoid cartilage
its lower free border forms
vestibular ligament
Cricorticoid ligament
lower part
Originates from
arch of the cricoid cartilage
superiorly
anteriorly:
thyroid cartilage
posteriorly:
vocal process of arytenoid cartilage
crico-tracheal ligament
between
cricoid cartilage
1st ring of trachea
CARTILAGE
SINGLE CARTILAGES
Thyroid cartilage
:check:
Epiglottis cartilage
:check:
connected to
HYOID BONE
with
Hyoepiglottic ligament
THYROID
with
Thyroepiglottic ligament
Cricoid cartilage
:check:
PAIRED CARTILAGES
Corniculate cartilages
:check:
join the
apices
of the
Cuneiform cartilages
:check:
Arytenoid cartilages
:check:
3 surfaces:
Posterior surface.
Anterolateral surface.
Medial surface.
important :
movement of
arytenoid
on the
cricoid
cartilage
allows
movement of
vocal cords
base
is articulated with
Cricothyroid joints
between
inferior horn of
and and the side of
One on each side