Peer-Reviewed Journal Details
Mandatory Fields
Fraher, J,Davenport, J,Fitzgerald, E,McLaughlin, P,Doyle, T,Harman, L,Cuffe, T;
2010
January
The Journal of Experimental Biology
Opening and closing mechanisms of the leatherback sea turtle larynx: a crucial role for the tongue
Validated
()
Optional Fields
leatherback turtle tongue larynx hyoid diving feeding DERMOCHELYS-CORIACEA DEEP DIVES JELLYFISH PATTERNS PLEURODIRA MORPHOLOGY CHELONIA
213
4137
4145
A combination of dissection and computed tomography scanning has provided significant novel insights into the structure and function of the Dermochelys coriacea larynx and its associated muscles. Several previously unknown features of the laryngeal aditus (glottis) are described and their functional significance in its opening and closure are considered. The tongue plays an essential part in producing and maintaining closure during dives and feeding bouts. Closure is brought about by compression of the glottis under the action of the two hyoglossus muscles. The tongue thus plays the role of the epiglottis of mammals, sealing the entrance to the larynx. As is already clear, opening is brought about by abduction of the arytenoid cartilages. In addition, there is a powerful mechanism for maintaining the larynx in close apposition to the hyoid plate during feeding and neck flexion, thereby enhancing the efficiency of feeding.
DOI 10.1242/jeb.042218
Grant Details