Larynx Flashcards
Name the hollow musculoligamentous structure.
Larynx
the larynx open superior to which structure?
the larynx open inferior to which structure?
- Laryngopharynx
trachea
The larynx compromised of what structures? name 4 groups
- 3 Unpaired cartilages
- 3 paired cartilages
- Fibroelastic membrane
- Numerous intrinsic muscles
Function of the larynx
- Instrument that produce sounds
- acts as a valve to close lower respiratory tract
is the larynx a cartilaginous or bony framework.
Cartilaginous framework
The largest laryngeal cartilage.
Thyroid cartilage
Name the structure that is connected anteriorly but separated posteriorly and explain where it is found?
Lamina
found on both left and right
Explain the laryngeal prominence.
3 marks
Most superior part of fusion between lamina.
More palpable in male than in female
project foward
the location superior thyroid notch.
Superior to the laryngeal prominence
Superior thyroid notch and laryngeal prominence are not palpable.
true or false
False
they are palpable landmarks
explain the inferior thyroid notch
it is less distinct
and found along the lower base of thyroid cartilage
explain the oblique line of larynx
found lateral on the surface of each lamina
ends expand into the inferior and posterior thyroid tubercles.
Site of attachment of extrinsic muscles of larynx.
The posterior margins of thyroid cartilage are elongated to form what?
Differentiate the structures formed.
Superior and inferior horns
Superior horns: connected to greater horns of the hyoid bone via lateral thyroid ligament.
Inferior horns: medial surface with facets to articulates with the cricoid cartilage
What/which structures forms the cricoid joint?
inferior horn connects to cricoid cartilage to form cricoid joint.
The most inferior laryngeal cartilage, that completely encircles the airway.
Cricoid cartilage.
Explain the structure/position of the cricoid cartilage.
Anterior- narrow arch
posterior- broad lamina.
has 2 shallow depressions on top for articulation with cricoarytenoid muscles.
Vertical ridge- for oesophagus attachment.
2 articular facets on each side:
superolateral surface: arytenoid cartilage
lateral surface: for the inferior horn
a leaft-shaped structure that projects posteriorsuperiorly. attached to the posterior aspect of thyroid cartilage?
epiglottis
Via which structure does the epiglottis attach to posterior aspect of the thyroid cartilage.
THryo-epiglottic ligamnet
Via which structure does the epiglottis attach to posterior aspect of the thyroid cartilage.
THryo-epiglottisligamnet
Explain the margins of the epiglottis
superior margin lies posterior to pharyngeal part pf tounge
inferior margin of oropharynx
Arytenoid cartilage
pyramid shaped
has 3 surfaces
the apex and the base
The base:
concave
articulate with the superior lateral facet of cricoid cartilage.
Apex
- articulates with a corniculate cartilage
Explain the anterior and posterior surfaces of the arytenoid cartilage.
The anterior: Has depression separated by a ridge that runs superolateral.
the upper depression for vestibular ligament Attachment
lower depression for vocal muscle attachment.
posterior surface: covered by transverse arytenoid muscle.
Name the anterior elongated process on the arytenoid cartilage.
Vocal process
for attachment of vocal ligament
The Muscular process
is an elongated lateral process
for attachment of posterior and lateral crico-arytenoid muscles.
Name the 2 conical cartilage .
Corniculate cartilage
explain the base and apex of this cartilage.
base: articulate with apex of arytenoid cartilage
Apices: projects posteromedially towards each