Larynx Flashcards
Functions of the Larynx:
Part of the air passages
Acts as a sphincter
Sound production
Thyroid means _______ _________ in Greek.
Oblong Shield
The skeleton of the larynx consists of 3 unpaired cartilages and 3 pairs of cartilages. The UNPAIRED cartilages are:
Thyroid
Cricoid
Epiglottis
The skeleton of the larynx consists of 3 unpaired cartilages and 3 pairs of cartilages. The PAIIRED cartilages are:
Arytenoid
Corniculate
Cuneiform
Thyroid cartilage is composed of two plate-like laminate that fuse anteriorly in the midline to form the _____ _______.
Laryngeal prominence (Adam’s Apple)
A ‘V’ shaped notch, the _____ _______ notch, is located above the laryngeal prominence.
Superior laryngeal notch
The posterior border of each lamina projects superiorly and inferiorly as the superior and inferior horns. The ________ horns articulate with the _________ cartilage.
Inferior
Cricoid
The _____ ______, a ridge on the lateral aspect of the thyroid cartilage, gives attachment to the ________. _. And ________ _______ __________ muscles.
Oblique line
Sternothyroid
Thyrohyoid
Inferior pharyngeal constrictor
The cricoid cartilage is located inferior to the _______ cartilage.
Thyroid
Cricoid cartilage is shaped like a _______ ______, with the narrow arch anterior and the wide lamina posterior.
Signet ring
________ cartilage is shaped like a signet ring.
Cricoid
A small ________ ________ at the junction of the arch and lamina articulates with the inferior horn of the thyroid cartilage
Articular facet
The ______ border of the lamina has 2 facets for articulations with the bases of the arytenoid cartilages.
Superior
The inferior border of the cartilage is horizontal and marks the boundary between larynx and trachea, it is connected to the first tracheal cartilage by the _________ _________.
Cricotracheal ligament
The epiglottis is a spoon shaped plate of ________ cartilage, the _______ ned is broad and free.
Elastic
Superior
The ______ end of the epiglottis is narrow and attached by thyroepiglottic ligament to the angle formed by the 2 laminae of thyroid cartilage.
Inferior
The anterior surface of the epiglottis is attached to the body of the hyoid by the ___________ ligament.
Hyoepiglottic
The _______ cartilages have 2 pyramidal cartilages located on the sides of the superior border, has a vocal process, and a muscular process.
Arytenoid
The Cricothyroid joint is a ______ joint.
Synovial
Right and left joints working together allow thyroid cartilage to tilt forward and backward on cricoid cartilage ( _______-like movement)
Visor
Membranes and Ligaments of the Larynx:
Thyrohyoid membrane
Cricotracheal Ligament
Hyoepiglottic and thyroepiglottic ligaments
Laryngeal mucosa is continuous with mucosa of the ______ and _______.
Pharynx
Trachea
Laryngeal Vestibule:
- Upper part of laryngeal cavity
- Extends from laryngeal inlet, superiorly, to a pair of mucosal folds (vestibular folds), inferiorly
- ______ _________ is the space between right and left vestibular folds
Rima vestibuli
The ______ __________ is the space between vestibular and vocal folds on each side.
Laryngeal ventricle
The laryngeal ventricle mucosa contains numerous mucous glands, which are the source of lubricating mucus for the ____ ______.
Vocal folds
Rima means:
Passageway
_____ ______ are prominent, shelf-like folds of mucosa.
Vocal folds
The _____ _______ is the space between the right and left vocal folds and has 2 parts:
- intermembranous (anterior 3/5)
- Intercartilaginous (posterior 2/5)
Rima glottidis
The ______ _______ is narrower than rima vestibuli
Rima glottidis
Width and shape of ____ _____ vary with movements of vocal folds and arytenoid cartilages
Rima glottidis
________ muscles of the larynx move the larynx as a whole (elevation and depression)
_________ muscles are capable of moving individual laryngeal cartilages
Extrinsic
Intrinsic
The action of the ______ muscles tilt the thyroid cartilage forward to increase distance between thyroid and arytenoid cartilages, this action tenses the vocal folds.
Cricothyroid
