exam 4 pre-check quizzes Flashcards
false vocal folds —— vibrate during speech production
DO NOT
true vocal folds ——- for speech production
vibrate
abducted vocal folds are —-
OPEN
adducted vocal folds are ——
CLOSED
what forms the superior border of the larynx?
hyoid bone
which is the largest laryngeal cartilage
thyroid cartilage
joint between the cricoid and thyroid cartilages; held together by cricothyroid ligaments
the inferior thyroid horns articulate with facets on side of cricoid cartilage
cricothyroid joint
joint between cricoid and artytenoid cartilages; held together by cricoarytenoid ligaments
the base of the arytenoids articulate with facets on cricoid lamina
Cricoarytenoid joint
all intrinsic muscles are
bilateral
Extrinsic laryngeal muscles
have one point attachment in the larynx and the other outside of the larynx. They work to move the larynx up or down.
Intrinsic laryngeal muscles
have both points of attachment in the larynx. Intrinsic muscles are responsible for vocal fold abduction, vocal fold adduction, and changing vocal fold biomechanical properties (e.g. stiffness)
suprahyoid laryngeal muscles
move the larynx up (laryngeal elevators)
infrahyoid muscles
move the larynx down (laryngeal depressors)
Which extrinsic laryngeal muscles are innervated by spinal nerves?
Sternohyoid, omohyoid, thyrohyoid, and sternothyroid
laryngeal vestibule
the space above the false vocal folds
laryngeal ventricle
the space in the larynx between the true and false vocal folds
subglottic space
the space below the true vocal folds
The membranous glottis comprises _____ of the glottis
2/3
the cartilaginous glottis comprises ______ of the glottis.
1/3
the muscles that bring the vocal folds together at the start of vibration remain ——– throughout vibration
contracted
What causes the vocal folds to close during vocal fold vibration?
Aerodynamic and elastic recoil forces
Calculate the fundamental frequency when the period of vocal fold vibration is 9 ms.
111 Hz
How does the fundamental frequency change if the period of vocal fold vibration changes to 7 ms?
The fundamental frequency increases (~143 Hz)
How does the thyrovocalis muscle act as a mechanism for fundamental frequency change?
When the thyrovocalis contracts, the vocal folds stiffen, thus increasing the fundamental frequency