Chpt 3
Understanding the Anatomy of the Larynx
This quiz will test your knowledge on the anatomy and fun
Key features of this quiz include:
- 20 comprehensive questions
- Checkbox format for detailed answers
- An informative tool for students and professionals alike
The thyroid cartilage:
Is the largest of the laryngeal cartilages
All of these
Has a depression in the front, called the thyroid notch, where the two lamina of the cartilage meet
Has upward- and downward-directed horns at the back of the lamina
The most significant movement of the cricothyroid joint is
The rotational movement
Neither rotational nor gliding movement
Rotation and gliding movements are equally significant
The gliding movement
The front and back attachments of the vocal fold are:
Front = lateral inside wall of thyroid lamina; back = vocal process of arytenoid cartilage
Front = inner surface of the thyroid cartilage, near midline and immediately below thyroid notch; Back = muscular process of arytenoid cartilage
Front = inner surface of the thyroid cartilage, near midline and immediately below thyroid notch; back = vocal process of arytenoid cartilage
Front = arch of the cricoid; back = apex of the arytenoid cartilage
The vocal fold is described as having a layer structure because:
From front-to-back, the vocal fold has five different tissue types from elastic fibers in front to muscular fibers toward the back
In a coronal section of the tissue, the vocal fold is seen to have five different tissue types from the most superficial layer to the deepest layer
The vocal folds have two layers
The epithelia covering of the vocal fold wraps the muscle of the vocal fold with several different mucosal layers
The term “glottis” refers to:
The region directly above the vocal folds
The adducted vocal folds
The opening between the vocal folds
The posterior part of the vocal folds
When the thyroarytenoid muscle contracts, what happens?
The internal tension of the muscle increases when the length of the muscle is held constant by the action of other muscles, and/or the muscle may be shortened by decreasing the distance between the arytenoid cartilage and the thyroid cartilage
The muscle may be lengthened by decreasing the distance between the arytenoid cartilage and the thyroid cartilage
The distance between the arch of the cricoid cartilage and the lower edge of the thyroid lamina is decreased
The contraction causes the vocal folds to separate, increasing the size of the glottis
The vocal folds can be lengthened in the forward direction by contraction of the:
Posterior cricoarytenoid muscle
Posterior cricoarytenoid and cricothyroid muscle
Thyromuscularis muscle
Cricothyroid muscle
Turbulent noise production takes place in and around the vocal folds when they:
Are completely abducted
Form a narrow constriction in the airway, as in whispering
Move back and forth periodically
Are completely adducted
Which of the following statements is true concerning the muscular mechanisms of adjusting fundamental frequency (F0)?
Contraction of the thyroarytenoid muscle is the only muscular mechanism for increasing the rate of vibration of the vocal folds
F0 is largely controlled by variations in tracheal pressure
The only muscle that can have a significant effect on the adjustment of F0 is the cricothyroid muscle
Various intrinsic and possibly extrinsic muscles of the larynx can play a role in adjusting F0
Fundamental frequency (F0) is defined as:
The number of times per second the lateral cricothyroid muscle contracts during phonation to close the vocal folds for full abduction
The spectrum produced by vibration of the vocal folds
The number of vibrations of the vocal folds occurring over a one second interval
The highest frequency of vocal fold vibration that can be produced by a particular individual
When people talk about the “loudness” of the sound made by the vibrating vocal folds, the physical basis of this percept is:
Magnitude of airflow (in Liters/sec) through the glottis
Thickness of the vocal folds (in mm) during vibration
Sound pressure level (in dB)
Fundamental frequency (F0)
The closest perceptual correlate of the acoustic spectrum of the laryngeal source is:
Vocal effort
Voice quality
Pitch
Vocal loudness
During development from birth to five years of age, the structure that dramatically changes position downward along the vertebral column is the:
Larynx
Tongue
All of these
Mandible
Typical average fundamental frequencies for young men and women (respectively) are:
130, and 200 Hz
200, and 130 Hz
85, and 150 Hz
180, and 240 Hz
Why are there differences in the typical fundamental frequencies of young adult men and women?
Men consciously use a lower F0 to make themselves sound more masculine
The arytenoid cartilages of men have greater rotation than the arytenoid cartilages of women and therefore allow for more effective vocal fold closure men
The vocal folds of men are longer and more massive than the vocal folds of women
Women use less muscular effort than men when producing voice
In old age the F0’s of men and women:
Both reduce to values around 110Hz
Become more similar to each other with higher F0’s in old men and lower F0’s in old women
Remain at the same levels as they were in young adulthood
Both increase to values above 200 Hz
Rotation at the cricothyroid joint changes the distance between:
The top of the cricoid lamina and the base of the arytenoid cartilages
The muscular process of the arytenoid and the arch of the cricoid cartilage
The facets on the two sides of the cricoid cartilage
The top of the cricoid arch and the bottom of the thyroid laminae
When the sliding motion occurs at the cricoarytenoid joints:
The arytenoid cartilages tilt toward each other so that their apices touch
The arytenoid cartilages are brought closer together as they slide up the long axis of the facets on the superior surface of the cricoid lamina
The rocking motion at the cricoarytenoid joints is prevented
The arytenoid cartilages slide forward and backward along the short axis of the facet on the superior surface of the cricoid lamina
Which structure separates the true from false vocal folds and contains the saccules that provide fluid for lubricating the true vocal folds?
Laryngeal ventricle
Laryngeal vestibule
Quadrangular membrane
Pyriform sinuses
What do the lateral cricoarytenoid muscle and posterior cricoarytenoid muscle have in common?
They both play major roles in abduction of the vocal folds
They both have attachments to the muscular process of the arytenoid cartilage, and their contractions produce the rocking motion at the cricoarytenoid joint (but in opposing directions)
They both play major roles in adduction of the vocal folds
They both have attachments to the vocal process of the arytenoid cartilage, and their contractions produce lengthening of the vocal fold
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