It's relatively common for a given gene to dictate a variety of functions from species to species, like the gene that codes for
jaw bones in reptiles and also ear bones in humans.
Not exact matches
In reptiles, both today and in the past, the jaw joint lies between the articular bone at the back of the lower jaw, and the quadrate bone in the skul
In reptiles, both today and
in the past, the jaw joint lies between the articular bone at the back of the lower jaw, and the quadrate bone in the skul
in the past, the
jaw joint lies between the articular
bone at the back of the lower
jaw, and the quadrate
bone in the skul
in the skull.
Thanks to a therapist who «readjusted the
jaw and did all the skull
bones,» says Marion, Torah was back on the snow
in a week.
Paul said «Initially, the
bone just looked like a piece of rock but, after recognising a groove and
bone structure, I thought it might be part of a
jaw from an ichthyosaur and immediately contacted ichthyosaur experts Dean Lomax (University of Manchester) and Prof. Judy Massare (SUNY College at Brockport, NY, USA) who expressed interest
in studying the specimen.
«As the specimen is represented only by a large piece of
jaw, it is difficult to provide a size estimate, but by using a simple scaling factor and comparing the same
bone in S. sikanniensis, the Lilstock specimen is about 25 % larger.
Bioengineer David Kaplan at Tufts University's Department of Biomedical Engineering, who had no role
in these findings, calls the work «fantastic» and adds future research might want the bioreactor to mimic the same range of mechanical forces this
bone will see if implanted — for instance, for the
jaw joint, «you'd want it to experience compression and torsion.»
The fossil
jaw bone (above), found
in 2000 by a trawler
in the North Sea, is extremely rare — and puzzling.
These cells orchestrate the development of the
jaws and other facial
bones as well as the heart and its major vessels
in a growing embryo, says Benner.
For example,
in snake skulls, a
bone called the quadrate is elongated, which allows snakes to open their
jaws very wide.
According to Shimada, one pair of
bones called hyomandibulae formed a massive oar - shaped lever to protrude and swing the
jaws open extra wide, like a parachute,
in order to receive more plankton - rich water into its mouth, similar to the way many sharks open their mouth.
Dr Nick Longrich, from the Milner Centre for Evolution based
in the University of Bath's Department of Biology & Biochemistry, studied one of these rare fossils, a fragment of a
jaw bone kept
in the Peabody Museum at Yale University.
This backs up a 2013 study that showed that several traits thought to be unique to bony fish, such as the presence of large platelike
bones, were
in fact present
in placoderms, an extinct group of
jawed fish related to the ancestor of both cartilaginous and bony fish.
In the treated chick embryos, the palate looked more like it does in other vertebrates: flat and seemingly reconnected to the jaw bone
In the treated chick embryos, the palate looked more like it does
in other vertebrates: flat and seemingly reconnected to the jaw bone
in other vertebrates: flat and seemingly reconnected to the
jaw bones.
The word anam means lake
in a Kenyan dialect; the fossils — including some teeth, parts of the upper and lower
jaws, an arm
bone, and these two pieces of a shinbone — were found near Lake Turkana
in northern Kenya.
That year, a sand mine worker
in Germany discovered the
jaw bone of Homo heidelbergensis — a 200,000 - to -600,000-year-old hominin now recognized as a likely common ancestor to both modern humans and Neandertals.
And a bony strut that connects a fish's
jaw hinge to the brain case became one of three tiny
bones in this chamber.
Because development often reprises stages of evolution, the growth of embryonic ears
in tandem with the
jaw is no accident: the sound - transmitting middle ear
bones that are a distinguishing feature of mammals evolved from what used to be gill arches
in fish and jawbones
in reptiles.
Another distinct characteristic of the Hog - nosed rat is that it lacks a
jaw muscle attachment point found
in most mammals called the coronoid process on the dentary
bone.
That feature allows the
bones to rotate, broadening the lower
jaw and thereby increasing the volume of seawater that can be taken
in a single gulp.
Using advanced facial and cranial biomechanical analyses with nearly 40 people whose measurements were plotted from toddlers to adults, the UI team concludes mechanical forces, including chewing, appear incapable of producing the resistance needed for new
bone to be created
in the lower mandible, or
jaw area.
Moreover, the
bones in the front part of a baleen whale's lower
jaw, or mandible, aren't fused as they are
in other mammals.
The idea is, a patient would come
in with a nasty broken
bone — say, a shattered
jaw — and instead of going through painful autograft surgeries or waiting for a custom scaffold to be manufactured, he or she could be x-rayed and a 3D - printed hyperelastic
bone scaffold could be printed that same day.
«They had pretty much the same features as mammals — for instance they were most likely warm - blooded — but taxonomically speaking they were reptiles, because
in their
jaws they still had a
bone that
in mammals is used for hearing.»
The specimen itself — a nearly complete skull, two portions of the
jaw, and a handful of teeth — can't be dated directly because it wasn't found
in the kind of sediment that allows radioactive dating; however, Brunet was able to come up with an age by comparing the
bones with those found at similar sites
in Kenya and Ethiopia.
Robert Cohen and his team at the State University of New York, Buffalo, have succeeded
in grafting the treated cattle
bone onto the
jaws of rats without provoking their immune systems to reject the foreign tissue.
Comparing volume and activity of the cells that break down
bone density
in the upper and lower
jaw bones of Medaka fish after 56 days spent aboard the International Space Station with those on the ground.
Additional side effects of the drug include osteoporosis, a condition
in which
bones become weak and brittle; akathisia, a disorder characterized by the need to be
in constant motion, including the head and
jaw; bruxism, or teeth grinding; and dryness of the mouth, all of which affect the implant healing process, says Bairam.
«A mouthful of knife - edged teeth set
in powerful
jaws would have made short work of potential prey, carving out huge chunks of flesh and
bone to swallow hole,» Sertich continued.
Known only through isolated teeth, haramiyids were largely mysterious until the discovery of the remarkably well - preserved
jaw of Haramiyavia — with intact molars, nearly complete mandibles and postcranial skeletal
bones —
in Greenland
in 1995 by a team including Shubin, Stephen Gatesy, professor of biology at Brown University, and the late Farish Jenkins, former professor of zoology at Harvard University.
Parts of its
jaw bone and teeth were found nine years ago
in the Djurab desert
in Chad.
The left dentary, or lower
jaw bone, of the new titanosaurian dinosaur Mansourasaurus shahinae as it was found
in rock of the Upper Cretaceous - aged (approximately 80 million - year - old) Quseir Formation of the Dakhla Oasis, Egypt.
«We compared it with these Aust
bones, and as soon as I saw it
in person, my
jaw just hit the floor,» said Lomax, referring to the
bones dug
in a village
in Gloucestershire, England.
A decline
in bone density also becomes apparent at this age around the
jaw and eye area however Colman says that these, «obvious areas of volume loss can be maintained through fillers.»
The researchers explained that prescription
bone - building drugs are costly, and most have side effects, which ironically include an increase
in hip fractures and
jaw necrosis.
Other potential risk factors include large tonsils, a small
jaw bone, a large tongue and having sleep apnea
in the family.
In a phytate - rich diet, their bodies will suffer from the lack of calcium and phosphorus with poor
bone growth, short stature, rickets, narrow
jaws and tooth decay; and for the lack of zinc and iron with anemia and mental retardation.
TMJ means Temporomandibular Joint, which is the joint where your lower
jaw connects to your facial
bones just
in front of the ear.
Physiotherapy treatment for TMJ Disorders includes postural examination and correction, and may include a combination of manual therapy to the chewing / biting muscles and those
in the neck and covering the head, mobilization of the facial
bones,
jaw and neck, acupuncture as tolerated, electrical stimulation, and therapeutic exercises.
When it is necessary to extract teeth, do so
in such a way as to avoid leaving the
jaw bone with cavitations, which can become focal points of infection.
Such side effects include stomach ulcers and osteoneocrosis, or death of the
jaw bone, resulting
in tooth loss, pain and infection.
After applying foundation, I always contour my face with some bronzer to add color and dimension back
in (I make an «E» starting at my forehead, hitting my cheek
bones and finishing along my
jaw line).
Dawn of the Dead: Packed with more blood, more gore, and more
bone - chilling,
jaw - dropping thrills, Dawn of the Dead: Unrated Director's Cut is the version too terrifying to be shown
in theaters!
Surgery is possible may be advised if the abscess is
in or under the skin; abscesses of the middle ear (causing balance problems),
in the eyeball (causing blindness),
in the mandible (
jaw bone) or
in the internal organs, are less easy to treat.
In miniaturizing the dog, we also created finer
bone which thins and refines the
jaw bone just as it does the leg
bones.
Craniomandibular osteopathy is a noncancerous growth of
bone that results
in abnormalities
in the
jaw of dogs.
Bull Terriers have very powerful
jaws and are able to chew off and swallow pieces of even the toughest
bone, which may then cause problems when they cause a blockage
in the digestive system.
Untreated periodontal disease can result
in bone infections and
jaw fractures.
Rabbit owners should be instructed to feed unlimited high - fiber foods.3, 5 Grass, a good - quality timothy hay, and fibrous, green, leafy vegetables are favorable foods that are high
in fiber and encourage the grinding motions of the
jaw that benefit attrition of the teeth.7 Rabbits require a diet that provides enough calcium for sufficient mineralization of their continually growing teeth and surrounding
bone structures, but not so much calcium that urinary tract disease is a risk.5 The ideal amount of dietary calcium for a rabbit is 0.5 % to 1.0 %.5
Left untreated, periodontal disease results
in the destruction of the gums, alveolar
bone (the part of the
jaws where the teeth arise), and the outer layer of the tooth root.
If you've seen a
jaw bone (mandible) or the upper
bone that holds teeth (maxilla), you noticed sockets
in the
bone.