Exam 1 Part 2 Flashcards
The only free floating bone in the body
Hyoid
Structure that sits at the top of the trachea and acts to close the airway
Larynx
Where is the larynx located?
Anterior to the lower pharynx
True or false: speech/phonation is the primary biological purpose of the larynx
False; exaptation
Characteristic that evolves to serve one function but is later coopted to serve another function
Exaptation
T/F: The larynx sits on top of the esophagus
False
What is the biological purpose of the larynx?
Airway protection (cough, throat clear, swallow), allows communication between the lungs and atmosphere for oxygen exchange, abdominal fixation
Impounding air in the thorax to stabilize the torso
Abdominal fixation
What are examples of abdominal fixation?
Child birth, lifting heavy things, defecation, vomiting
What is an examples of exaptation in terms of the larynx?
Phonation
Space between the true vocal folds
Glottis
T/F: The glottis is the space between the true and false vocal folds
False; true only
What muscles attach to the hyoid bone?
Jaw, tongue, larynx
Signet ring shaped structure on top of the trachea/base of the larynx
Cricoid cartilage
Paired pyramidal structure that sits on top of the posterior portion of the cricoid cartilage
Arytenoid cartilage
