Navigation Links
Born to roar
Date:11/2/2011

dogs and cats," Riede says. "Lions and tigers are just interesting examples for very loud and low-frequency vocalization."

These studies have a practical aspect. "If you understand how vocal folds are structured and what effects that structure has on vocal production, then it could help doctors make decisions on how to reconstruct damaged vocal fold tissue" in people such as cancer patients, singers, teachers, coaches and drill sergeants, he says.

Voices of Big Cats

The new study analyzed vocal folds from within the larynx, commonly known as the voice box. Larynges were excised from three lions and three tigers euthanized for humane reasons due to advanced disease at the Henry Doorly Zoo in Omaha. They ranged from 15 to 22.4 years old at death. The three lions were females. The tigers were female Sumatran and Bengal tigers and a male Amur (Siberian) tiger.

Vocalization is complex, and involves factors not included in the new study of vocal folds: how air is pushed from the lungs, how sound resonates in the vocal tract, how the tongue and jaw move, and movement of muscles and cartilage of the larynx.

The study included examinations of vocal fold tissue, which is soft connective tissue in the form of elastin, collagen, a lubricant known as hyaluronan, and fat.

Lions and tigers have large vocal folds: about 1 inch high from top to bottom, 1 inch thick side to side and 1.5 inches long front to back. They protrude from the larynx into the airway just above the trachea, forming a triangular shape on each side of the airway in most species but a squared shape in lions and tigers.

Scientists already knew lions and tigers have significant fat within their vocal folds. The new study showed that in big cats, this fat is located deep within the vocal fold ligament, and helps give the folds their flattened, square shape.

That shape "makes it easier for the tissue to respond to the passing airflow," al
'/>"/>

Contact: Lee Siegel
lee.siegel@utah.edu
801-581-8993
University of Utah
Source:Eurekalert  

Page: 1 2 3 4 5

Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Born to roar
(Date:8/28/2014)... did the earliest birds take wing? Did they fall from ... Or did they run along the ground and pump their ... million years in the past, but a new University of ... birds have an innate ability to maneuver in midair, a ... rather than fall from a perch. , The study looked ...
(Date:8/28/2014)... NJ Top Docs Presents Dr. Christophe Oliveira ... Top Doc, Dr. Christophe Oliveira, has just announced ... for the department of transportation. Dr. Oliveira has ... all drug testing for commercial drivers. , Having ... disorders including disk herniations, spinal stenosis, muscle sprains/strains, ...
(Date:8/28/2014)... (BRONX, NY) Researchers from Albert Einstein College of ... a potential antibody therapy for Sudan ebolavirus (SUDV), one of ... the Zaire ebolavirus (EBOV), is now devastating West Africa. First ... (most recently in 2012) that have killed more than ... ACS Chemical Biology . , Between 30 and 90 ...
(Date:8/28/2014)... In 2012, The Ben & Catherine Ivy Foundation ... brain cancer research projects at the Translational Genomics ... officially received the final regulatory approval from University ... for the trial can begin. , In the ... Trial," TGen and its clinical partners will lead ...
(Date:8/28/2014)... A herbal preparation prescribed by a Chinese herbal ... in life-threatening heart changes, prompting a team of ... appropriate patient education by practitioners who prescribe complementary ... , the journal of the Australasian College for ... and Dr Nicky Dobos from the Intensive Care ...
Breaking Medicine News(10 mins):Health News:Flapping baby birds give clues to origin of flight 2Health News:Flapping baby birds give clues to origin of flight 3Health News:NJ Top Docs Presents Dr. Christophe Oliveira of Rehabilitation Instiute of North Jersey 2Health News:NJ Top Docs Presents Dr. Christophe Oliveira of Rehabilitation Instiute of North Jersey 3Health News:Drug shows promise against Sudan strain of Ebola in mice 2Health News:TGen receives approval for patient enrollment in brain cancer clinical trial 2Health News:Deadly remedy: Warning issued about Chinese herbal medicine 2
... Bulgaria’s Agriculture Minister Nihat Kabil has revealed that ... bird flu. The bird was however not infected ... dangerous H5 virus. The dead swan was found ... was unable to say whether avian flu had ...
... expected in poultry during the course of 2006, according to ... take place // among human beings on a large scale, ... Governments have however been called upon to be prepared ... have been called upon to improve their surveillance where the ...
... end up losing as many as over 200 doctors, over the ... abortion. // The Catholic doctors who are from Queensland are of ... be deprived of his powers when it comes to deciding upon ... ,The AMA on the other hand is calling for ...
... meeting with Boston Scientific to talk about the repairs in ... held in 2001 with Schering-Plough // about problems with its ... to make any amendments. This provoked the FDA to withhold ... solve this problem Raul E. Cesan, the company's president and ...
... of the Teratology Society published a paper in the journal ... ,In this paper they said that overweight and ... develop medical problems at birth. ,This paper talked ... obese mothers. , It is stated that they ...
... closely monitored surveillance for patients with colon and rectal ... recurrence // compared to less aggressive strategy which is ... found that an intensified follow up of patients in ... diagnosis of cancer recurrence which could help in treatment ...
Cached Medicine News:
(Date:8/28/2014)... , Aug. 28, 2014 Levi & Korsinsky ... in the United States District Court for the District ... investors who purchased Galectin Therapeutics Inc. ("Galectin" or the ... July 28, 2014. For more information, click ... that during the Class Period the Company violated federal ...
(Date:8/28/2014)... , August 28, 2014 ... "DNA diagnostics Market (products, applications, techniques, end users ... Growth and Forecast, 2013 - 2020," indicates that ... billion by 2020 registering a CAGR of 9.8% ... accurate diagnosis and cost effectiveness over alternative diagnostic ...
(Date:8/28/2014)... /PRNewswire-iReach/ -- Gateway Analytical announced today that they ... Annual Global Pharma Manufacturing Summit in ... The Global Pharma Manufacturing Summit offers a networking ... biologic pharmaceutical manufacturing. The conference is focused on ... such as the increasing pressure to grow and ...
Breaking Medicine Technology:SHAREHOLDER ALERT: Levi & Korsinsky, LLP Reminds Investors of Class Action Against Galectin Therapeutics Inc. and Its Board of Directors and a Lead Plaintiff Deadline of September 29, 2014 -- GALT 2DNA Diagnostics Market is Expected to Reach $19 Billion by 2020 - Allied Market Research 2DNA Diagnostics Market is Expected to Reach $19 Billion by 2020 - Allied Market Research 3Gateway Analytical to Promote Particulate Identification Services at the 9th Annual Global Pharma Manufacturing Summit 2Gateway Analytical to Promote Particulate Identification Services at the 9th Annual Global Pharma Manufacturing Summit 3
... May 6, 2011 CryoLife, Inc. (NYSE: ... tissue processing company, today announced the final results of ... owned subsidiary CL Falcon, Inc., for 49.9 percent of ...  The tender offer expired at 12:00 midnight, Eastern Time, ...
... Ferring Pharmaceuticals Inc., the makers of FIRMAGON® (degarelix for injection), ... the race to end prostate cancer as an official sponsor ... growing men,s health event series in the United States. Now ... (GPCC) is led by ZERO – The Project to ...
Cached Medicine Technology:CryoLife Announces Final Results of Tender Offer for 49.9 Percent of the Outstanding Shares of Cardiogenesis Corporation 2CryoLife Announces Final Results of Tender Offer for 49.9 Percent of the Outstanding Shares of Cardiogenesis Corporation 3CryoLife Announces Final Results of Tender Offer for 49.9 Percent of the Outstanding Shares of Cardiogenesis Corporation 4CryoLife Announces Final Results of Tender Offer for 49.9 Percent of the Outstanding Shares of Cardiogenesis Corporation 5CryoLife Announces Final Results of Tender Offer for 49.9 Percent of the Outstanding Shares of Cardiogenesis Corporation 6Ferring Pharmaceuticals to Support Great Prostate Cancer Challenge® Events Across the Country in National Effort to End Prostate Cancer 2Ferring Pharmaceuticals to Support Great Prostate Cancer Challenge® Events Across the Country in National Effort to End Prostate Cancer 3
... The Devex Mesh System is indicated for ... a diseased vertebral body resected or excised for ... of the spinal cord and neural tissues, and ... body. Devex Mesh System is also indicated for ...
... Ocelot stackable cage system provides anterior column ... total vertebrectomies from T1 to L5. The ... Carbon fiber polymer cages that are stacked ... needs. The Peek Carbon fiber reinforced polymer ...
... Vitoss engineered to resemble ... and structure. -TCP constructs ... in spinal arthrodesis surgery ... due to trauma and ...
... system provides anterior column support for single ... T1 to L5. The system consists of ... cages that are stacked to a desired ... Carbon fiber reinforced polymer material emulates the ...
Medicine Products: