Posterior Cricoarytenoid (PCA) activation and abduction

Now watch how the activation of the Posterior Cricoarytenoid (PCA) abducts (opens) the vocal folds! This was done using a fresh cow larynx. Credit: Joseph Michael Falduti, Julia Foster Rottmayer, Liz Johnson. Recorded July, 2012, at the Summer Vocology Institute at the University of Utah, Salt Lake City, UT. You are free to share this video and display it in a classroom or other educational settings. Any other use requires permission from the owners.