Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
What are the larynxes cranial and caudal articulations?
|
Cranially, it articulates with they thyrohyoid bone and caudally, the trachea.
|
|
|
What does the oral surface of the epiglottic cartilage attach to?
What about the stalk of the epiglottic cartilage? |
The oral surface attaches to the basihyoid bone by the hyoepigglotticus m.
The stalk connects to the thyroid cartilage. |
|
|
What does the apex of the epiglottis normally rest on?
|
The soft palate.
|
|
|
What is the largest cartilage of the larynx?
|
The thyroid cartilage.
|
|
|
What do the cornus (?) ... corni (?) of the thryoid cartilage articulate with?
What else is the laryngeal prominence known as? |
The rostral cornu articulates with the thyrohyoid bone.
The caudal cornu articulates with the cricoid cartilage. The Adam's apple is the laryngeal prominence. |
|
|
What does the cricothyroid ligament course between specifically?
|
The caudal thyroid incisure of the thyroid cartilage and the cricoid cartilage.
|
|
|
What are the four processes of the artyenoid cartilage?
To which process of the arytenoid cartilage do the ventricular ligament and ventricularis m. attach? What about the cricoarytenoideus dorsalis m.? The vocal ligament and vocalis m.? |
The cuneiform, corniculate, vocal and muscular processes.
The ventricular ligament and ventricularis m. attach to the cuneiform process. The cricoarytenoideus dorsalis m. attaches to the muscular process. The vocal ligament and vocalis m. attaches to the vocal process. |
|
|
Define the glottis.
|
It is the opening into the trachea formed dorsally by the arytenoid cartilages and ventrally by the vocal folds.
The pharyngeal ventricles open ventrolaterally and the glottis in the central opening above them. |
|
|
Between which two folds of the larynx is the laryngeal ventricle found?
|
Between the vestibular and vocal folds.
|
|
|
What are the spaces named descending down the epiglottis into the trachea?
|
Aditus laryngis to vestibule to glottis to infraglottic cavity to trachea.
|
|
|
From where do the laryngeal muscles originate developmentally?
What nerve innervates them? |
They originate from the 4th pharyngeal arch.
CN X innervates them. |
|
|
Where does cricothyroideus m. course between?
What is its action? |
Courses between the lateral surface of the cricoid cartilage and the caudal margin and medial surface of the thyroid cartilage
Pivots the cricoid cartilage on its thyroid articulation, thus tensing the vocal fold – raises pitch of voice |
|
|
Where does cricoarytenoideus dorsalis m. course between?
What is its action? |
Arises from the dorsolateral surface of the cricoid cartilage and inserts on the muscular process of the arytenoid cartilage
Rotates the arytenoid, vocal process moves laterally – opens glottis |
|
|
Where does cricoarytenoideus lateralis m. course between?
What is its action? |
Arises from the lateral and cranial surfaces of the cricoid cartilage and inserts on the muscular process of the arytenoid cartilage between the insertion of cricoarytenoideus dorsalis m. above and vocalis m. below
Closes the glottis by pulling the muscular process ventrally and thus moving the vocal process medially |
|
|
What muscles does thyroarytenoideus m. give rise to?
Where does it course between? What is its action? |
vocalis m. and ventricularis m.
Arises from the internal midline of the thyroid cartilage; courses caudodorsally to insert on the arytenoid cartilage Relaxes the vocal fold and constricts the glottis |
|
|
Where does ventricularis m. course between?
What is its action? |
Courses from the cuneiform process of the arytenoid to the interarytenoid cartilage dorsally
Constricts glottis |
|
|
Where does vocalis m. course between?
What is its action? |
Courses from the internal midline of the thyroid cartilage to the vocal process of the arytenoid cartilage
Draws the arytenoid cartilage downward, thus relaxing the vocal fold - lowers pitch of voice |
|
|
How does the larynx of the cat differ from the dog?
|
No corniculate or cuneiform processes. No laryngeal ventricles.
|
|
|
What branches of the vagus n. innervate the laryngeal muscles?
|
The cranial laryngeal n. innervates the cricothyroideus m.
The caudal laryngeal n. (off of recurrent laryngeal n.) innervates the remainder of the laryngeal muscles. |
