Topic 3 Quiz Questions Flashcards
The muscle labelled A in the diagram is the ______ muscle.
Mylohyoid – a fan-shaped muscle spanning the floor of the mouth and attaching to the mandible and the hyoid bone.
The muscle labelled B is the _______ muscle.
Sternothyroid – it doesn’t attach to the hyoid bone at all, but to the thyroid cartilage and sternum. However, it is still classified as a “hyoid” muscle because it acts as part of the infrahyoid group in depressing the larynx.
The structure labelled A is the ______ cartilage.
Cricoid cartilage – most inferior cartilage, attaches to the first tracheal cartilage via a membrane.
The structure labelled B is the _____ membrane.
Thyrohyoid membrane
What ligament/membrane is shown at A?
Quadrangular membrane – intrinsic membrane that connects epiglottis, thyroid cartilage and arytenoid/corniculate cartilages.
List in order from superior to inferior, the muscles that make up the floor of the mouth:
digastic
geniohyoid
mylohyoid
Geniohyoid, then mylohyoid, then digastic.
Which intrinsic laryngeal muslce is the only abductor of the vocal folds?
Posterior cricoarytenoid
Which is the major muscle that is used to alter vocal pitch?
We achieve changes in vocal pitch primarily by using the cricothyroid muscle to rock the thyroid cartilage anteriorly, thus stretching the vocal folds. The suprahyoid muscles also contribute to pitch raising.
What movement of the arytenoid cartilages leads to vocal fold adduction when the lateral cricoarytenoid muscle is used?
Lateral rotation
Which action is caused by the thyrovocalis muscle?
Larynx depression
Vocal fold adduction
Vocal fold tensing
Larynx elevation
Thyrovocalis causes vocal fold tensing.
It is a component of the thyroarytenoid.
Which action is caused by the oblique arytenoid muscle?
Larynx depression
Vocal fold adduction
Vocal fold tensing
Larynx elevation
vocal fold adduction
Which action is caused by the stylohyoid muscle?
Larynx depression
Vocal fold adduction
Vocal fold tensing
Larynx elevation
larynx elevation
Which action is caused by the omohyoid muscle?
Larynx depression
Vocal fold adduction
Vocal fold tensing
Larynx elevation
larynx depression
During forced respiration, how would you describe the shape of the rima glottidis?
Diamond shaped
