Navigation Links
Toad research could leapfrog to new muscle model
Date:6/2/2008

A toad sits at a pond's edge eyeing a cricket on a blade of grass. In the blink of an eye, the toad snares the insect with its tongue. This deceptively simple, remarkably fast feeding action offers a new look at how muscles work.

This fresh perspective could lead to designing more efficient electric motors, better prostheses and new medical treatments for neuromuscular diseases like Parkinson's.

Science has long held that muscles behave largely like motors. Northern Arizona University researcher Kiisa Nishikawa suggests that muscle acts more like a spring.

"Existing theories don't explain how muscles shorten rapidly," Nishikawa said. "Muscles can only shorten to do work; they can't do work by lengthening." A spring also can only do work by shortening.

By example, Nishikawa explains that the jaw muscles in toads and chameleons shorten in the lower jaw, and the opening of the jaws causes the tongue to stretch by its own momentum.

"When a toad or chameleon captures prey with its tongue, it exerts force over a distance. Figuring out how they do it has immense application to any device that actually moves."

A toad's jaw muscles can produce forces greater than 700 times the animal's weight. "The best electric motor achieves about one-third of that force-to-weight ratio," Nishikawa noted.

Muscles also function as self-stabilizing springs.

"They have built-in self-correcting mechanisms. Before the brain can even react, muscles are changing their elasticity adaptively," she said. Think of walking down a flight of steps and missing a step. Leg muscles instantly become less stiff to afford better shock absorption. "It's an intrinsic property of muscle," Nishikawa said.

Tom Sugar and his colleagues Arizona State University have been inspired by biology in designing a robotic tendon. After meeting with Nishikawa about her work, Sugar said, "We were amazed at the speed, energy storage and po
'/>"/>

Contact: Lisa Nelson
Lisa.Nelson@nau.edu
928-523-6123
Northern Arizona University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Mouse model developed at UT Southwestern mimics hyperglycemia, aids in diabetes research
2. Research measures movement of nanomaterials in simple model food chain
3. NIH expands national consortium dedicated to transforming clinical and translational research
4. Fruits, vegetables and teas may protect smokers from lung cancer, UCLA researchers report
5. 2 University of Illinois researchers named HHMI investigators
6. Research suggests parts of UK could be too hot for wine making by 2080
7. New technique allows targeted inactivation of genes in research model
8. Research suggests parts of UK could be too hot for wine-making by 2080
9. New family of gecko discovered by researchers from the U of Minnesota and Villanova University
10. New research: Fruit juice consumption not related to overweight in children
11. Researcher strives for watershed moment
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Toad research could leapfrog to new muscle model
(Date:4/2/2015)... April 2, 2015 In ... by far outperforms the strongest competitors, showing outstanding ... accuracy, the system is capable of a throughput ... proves up to be ten times faster than ... runner-up performance.      (Photo: http://photos.prnewswire.com/prnh/20150402/738673-a ...
(Date:4/1/2015)... 2015   Medisafe ™, the leading global medication ... iOS and Android smartphones and tablets, ... the platform to allow patients to track and correlate ... time, patients will be able to visualize in real-time ... biometrics, such as glucose levels and blood pressure. ...
(Date:3/24/2015)... 2015 Research and Markets ( http://www.researchandmarkets.com/research/hdgz7h/global_iris ... Iris Recognition Market 2015-2019" report to their offering. ... market to grow at a CAGR of 23.5 percent ... the present scenario and the growth prospects of the ... calculate the market size, the report considers the revenue ...
Breaking Biology News(10 mins):DERMALOG AFIS Emerges as Performance Winner in NIST Benchmark Test 2DERMALOG AFIS Emerges as Performance Winner in NIST Benchmark Test 3Medisafe Announces Launch of Biometric Integration, Enabling Patients to Stay Adherent to Their Meds and See Tangible Health Results 2Global Iris Recognition Market 2015-2019 with 3M Cogent, Bioenable Technologies, Cross Match Technology, Iris ID Systems & Safran Dominating 2
... major food source for much of the world, rice is one ... from disease has become, in part, the task of a group ... State University. The researchers are looking at two bacterial diseases ... is caused by a bacterium called Xanthomonas oryzae pathovar oryzae ...
... N.Y. (Wednesday, April 1, 2009) Along with new ... home to an in-depth library of basic laboratory methods. ... of these standard techniques. From molecular biology researchers ... is the commonly used method for nucleic acid amplification. ...
... (SACRAMENTO, Calif.) New research from UC Davis Cancer Center ... ingredient that allows breast cancer to spread to other organs ... April 1 issue of Cancer Research , is one ... the disease. Kermit Carraway, senior author of the study, ...
Cached Biology News:Researchers examine bacterial rice diseases, search for genetic solutions 2Basic guides to PCR, labeling neurons featured in Cold Spring Harbor Protocols 2UC Davis researchers identify a protein that may help breast cancer spread, beat cancer drugs 2
(Date:4/24/2015)... April 24, 2015 /PRNewswire/ - BioAmber Inc. (NYSE: ... as the supplier of bio-succinic acid used to ... for textile applications that Bayer MaterialScience has begun ... IMPRANIL ® eco, a series of bio-based ... as high as 65%.  IMPRANIL ® eco ...
(Date:4/24/2015)... 2015 PAREXEL International Corporation (NASDAQ: PRXL ... that Partnerships in Clinical Trials named PAREXEL,s Drew ... Innovator of the Year.  The honor recognizes Mr. Garty,s ... Perceptive MyTrials ® Data-Driven Monitoring solution. ... 2015 Partnership Awards in Boston , ...
(Date:4/23/2015)... (PRWEB) April 23, 2015 The ... intends to conduct a groundbreaking pilot study to ... be reversed in as little as three to ... of metabolic and nutritional medicine—will aggressively target and ... and destroy our aging brain. These include oxidative ...
(Date:4/23/2015)... April 23, 2015  Neurocrine Biosciences, Inc. (Nasdaq: ... its first quarter 2015 results before the Nasdaq market ... host a live conference call and webcast to discuss its ... April 30, 2015 at 8:00 a.m. Eastern Time (5:00 ... live conference call by dialing 866-952-1906 (US) or 785-424-1825 ...
Breaking Biology Technology:Bayer MaterialScience Names BioAmber As Its Supplier For New Product Line - Bio-succinic acid forms backbone of innovative new bio-based polyurethanes for textiles 2Bayer MaterialScience Names BioAmber As Its Supplier For New Product Line - Bio-succinic acid forms backbone of innovative new bio-based polyurethanes for textiles 3Bayer MaterialScience Names BioAmber As Its Supplier For New Product Line - Bio-succinic acid forms backbone of innovative new bio-based polyurethanes for textiles 4PAREXEL Honored With 2015 Clinical Innovator Of The Year Award From Partnerships In Clinical Trials 2PAREXEL Honored With 2015 Clinical Innovator Of The Year Award From Partnerships In Clinical Trials 3PAREXEL Honored With 2015 Clinical Innovator Of The Year Award From Partnerships In Clinical Trials 4PAREXEL Honored With 2015 Clinical Innovator Of The Year Award From Partnerships In Clinical Trials 5New Study Looks to Reverse Alzheimer’s Disease 2New Study Looks to Reverse Alzheimer’s Disease 3Neurocrine Biosciences Announces Conference Call and Webcast to Report First Quarter 2015 Results 2
... 12, 2011 Water Street Healthcare Partners , ... care, announced today that Scott Garrett has joined the ... former chairman, president and chief executive officer of Beckman ... years of experience leading health care businesses ranging from ...
... WORTH, Texas, April 12, 2011 Wound Management Technologies, ... wound care solutions, today announced that the Company has ... McAllen, Texas to distribute CellerateRX® gel products in select ... the agreement calls for 1st year sales of at ...
... 12, 2011 Dr. Fresh®, Inc., maker of the ... Facebook fundraising initiative to raise awareness and funds for ... 12, 2011, the company will donate $1 for every ... to $2500, to Smile Train.  The organization provides life-changing ...
Cached Biology Technology:Scott Garrett Joins Water Street Healthcare Partners 2Scott Garrett Joins Water Street Healthcare Partners 3WNDM Signs $1.5 M Multiyear Regional Distribution Agreement 2WNDM Signs $1.5 M Multiyear Regional Distribution Agreement 3FireFly® Toothbrush Facebook Campaign Raises Funds for Smile Train 2
Compound(s) screened through any number of client selected assays. Client also selects number of concentrations and replicates....
... degradation is critical to the maintenance ... regulatory proteins as important and diverse ... heat shock and stress response, antigen ... and ion channels, cell cycle regulation, ...
... (PPAR) is a member of a ... factors that heterodimerize with retinoic acid-like ... the regulation of glucose and lipid ... of anti-diabetic agents called thiazolidinediones (TZD) ...
... used for the identification of potential biomarkers in ... other diseases. Due to the fact that urine ... provides an attractive alternative to blood plasma as ... Urine Protein Concentration Micro Kit provides a ...
Biology Products: