Prelim | Respiratory System | Larynx Flashcards
Other term for the larynx
Voicebox
Size (dimesnsions) of the larynx
4-5 cm in length and width (smaller in women)
Shape of the larynx
Tubular
Location of the larynx
Midline of the neck anterior to the esophagus and the 4th through 6th cervical vertebrae (C4-C6)
Composition of the larynx
Wall: 9 cartilages
Functions of the larynx
- Passageway of air connecting laryngopharynx and trachea
Lining of the larynx superior to vocal folds
Nonkeratizined stratified squamous epithelium
Linings of the larynx inferior ro vocal folds
Pseudostratified ciliated columnar epithelium consisting of ciliated columnar cells, goblet cells, and basal cells
Responsible for producing new cells
Basal cells
Horseshoe-shaped structure
Hyoid bone
The hyoid bone serves as an attachment structure for the (1) and muscles in the floor of the (2) above, the (3) below, and the (4) and (5 behind.
- tongue
- oral cavity
- larynx
- epiglottis
- pharynx
9 cartilages of the larynx
Paired
1. Arytenoid cartilage
2. Corniculate cartilage
3. Cuneiform cartilage
Unpaired
7. Thyroid cartilage
8. Cricoid cartilage
9. Epiglottis
Of the paired cartilages of the larynx, the — are the most important because they influence changes in position and tension of the vocal folds (true vocal
cords for speech).
arytenoid cartilages
Most prominent part of the larynx
Thyroid cartilage
Ligament connecting the thyroid cartilage to the hyoid bone
Thyrohyoid membrane
Other term for thryoid cartilage
Adam’s apple
Cartilage type of the thyroid cartilage
2 plates of hyaline
Shape of the thyroid cartilage
Triangular/ shield-shaped
Anatomy of the thyroid cartilage
- Laryngeal prominence
- Thyrohyoid membrane
What type of cartilage is the epiglottis?
Elastic
Shape of the epiglottis
Leaf-shaped
Anatomy of the epiglottis
- Glottis
- Rima glotidis
A pair of folds of mucus membrane in the glottis
Vocal folds/ true vocal cords
Space between the glottis
Rima glottidis
Cricoid cartilage type
Hyaline
Shape of the cricoid cartilage
Ring
Anatomy of the cricoid cartilage
- Cricotracheal ligament
- Cricothyroid ligament
Making an emergency airway
Tracheotomy (tracheostomy)
Landmark for tracheotomy
Cricoid cartilage
Arytenoid cartilage type
Hyaline
Shape of arytenoid cartilage
Triangular
Found in the posterior, super border of the cricoid cartilage
Arytenoid cartilage
Other term for the corniculate cartilage
Cartilage of Santorini
Corniculate cartilage type
Elastic
Shape of the corniculate cartulage
Horn-like
Found on the apex of each arytenoid
Corniculate cartilage
Other term for cuneiform cartilage
Wrisberg cartilage
Cuneiform cartilage type
Club-shaped
Found anterior to the corniculate
Cuneiform cartilage
Larynx cartilage that prevents materials from entering the airway
Epiglottis
Larynx cartilage that maintains airway patency.
Attachment points for key muscles, ligaments and cartilage.
For sound production.
Cricoid
Larynx cartialge that provides wide range of mobility.
Serves as an attachment point of intrinsic
muscle and other cartilages.
Arytenoid
Larynx cartilage that provides movements for the abduction and adduction of the vocal cords.
Corniculate
Larynx cartilage that supports the structure of the lateral aspect of the epiglottis and the vocal cords.
Cuneiform
Two groups of muscles associated with the anterior aspect of the neck
- Suprahyoid muscle
- Infrahyoid muscle
Suprahyoid muscles (neck)
Digastric
Stylohyoid
Mylohyoid
Geniohyoid
Infrahyoid muscles (neck)
Omohyoid
Sternohyoid
Thryohyoid
Sternothyroid
Ligament structures in the neck
Extrinsic ligaments
Intrinsic ligaments
Extrinsic ligaments (neck)
Thyrohyoid
Hypo-epiglottic
Cricotracheal
Intrinsic ligaments (neck)
Cricothyroid
Cricocorniculate
Thyroepiglottic
Thyroarytenoid
Arytenoidepiglottic
Space that extends from the entrance into the larynx down to the inferior border of the cricoid cartilage
Cavity of the larynx
Portion of the cavity of the larynx above the vestibular folds (false vocal cords)
Laryngeal vestibule
Portion of the cavity of the larynx below the vocal folds
Infraglottic cavity
The mucous membrance of the larynx forms two pairs of folds:
Vestibular folds (false vocal cords)
Vocal folds (true vocal cords)
False vocal cords vs True vocal cords
False vocal cords: vetibular folds; superior pair
True vocal cords: vocal folds; inferior pair
Space between the vestibular folds
Rima vestibuli
Lateral expansion of the middle portion of the laryngeal cavity
Laryngeal ventricle