Sentences with phrase «arm bone»

Indeed, two of the fossils — a hand bone and upper arm bone — showed wear and tear consistent with fighting.

The researchers then compared their measurements to those of arm bones taken from 69 other species of flying dinosaurs and modern birds.

Keep the head of the right arm bone back.

This becomes important in the correct placement of the lower arm bones.

This fossil arm bone suggests that the first four - legged creatures did push - ups before they walked onto dry land.

This species had a very distinctive arm bone, making identification easy: «We got lucky there,» he says.

If possible, pick the head of one arm bone up, draw it back and then drop it back down.

While the upper arm bone and elbow of a human strongly suggest biceps, the abdominal cavity of a skeleton provides no information — in humans or dinosaurs.

The rotator cuff is a group of four muscles that stabilizes the upper arm bone in the shoulder socket and allows the shoulder to rotate.

As you press the palms up, draw the upper arm bones into the shoulder sockets.

This large, fan - shaped muscle originates at the clavicle, ribs and sternum, and inserts into the upper portion of your humerus (upper arm bone from elbow to shoulder), and its main job is to help flex the shoulder joint and move your arm toward and across your chest.

In x-rays, the upper arm bone with an embedded arrowhead — the one that triggered the discovery of the battlefield — seemed to show signs of healing.

In 1996, while a professor at the University of Munich, he and graduate student Matthias Krings recovered mitochondrial DNA from a 40,000 - year - old piece of Neanderthal arm bone.

A study published by Cell Press on October 27 in Developmental Cell reveals that a fractured arm bone in newborn mice can rapidly realign through a previously unknown mechanism involving bone growth and muscle contraction.

Incisions and pits on arm bones from an ancient hominid, Australopithecus anamensis, and similar marks on a horse's leg bone likely resulted from crocodile bites and not stone - tool use, as initially suspected, the investigators say.

Hug your right arm bone into the socket and press the base of your right index finger into the floor.

I systematically laid out the strange little skeleton: skull first, at one end of a long table, followed by fragments of vertebrae, and then arm bones, hands, pelvis, leg bones and feet, just as I would do with any archaeological skeleton in the bone lab.

A shoulder subluxation occurs when the upper arm bone completely separates from the shoulder blade's «socket» but spontaneously reduces.

A third adult specimen, from about 1.85 million years ago, includes partial arm bones and a nearly complete right foot.

The fossil fish Tiktaalik, discovered in 2006, dates back to the same period, and its skeleton bears many more similarities to tetrapods than to the placoderms described in Long's article — including homologous arm bones and shoulder, neck and ear features.

Women from the earliest farming sites, dating to between about 7,300 and 7,000 years ago, had leg bones about as strong as those of modern rowers but arm bones between 11 and 16 percent stronger for their size than rowers.

In 1996, an amateur archaeologist found a single upper arm bone sticking out of the steep riverbank — the first clue that the Tollense Valley, about 120 kilometers north of Berlin, concealed a gruesome secret.

The flint arrowhead embedded in this upper arm bone first alerted archaeologists to the ancient violence in the Tollense Valley.

Even though the scientists had nothing more than two fossilized arm bones to go on, the fossils contain enough evidence to make the postmortem analysis possible.

Dinosaurs and some other dinosauromorphs such as Silesaurus opolensis have an enlarged crest on the upper arm bone where muscles attached.

The team examined dozens of T. rex bones from several fossil collections and found that three foot bones and one arm bone contained gouges (inset) that could have come only from another T. rex.

A 370 - million - year - old arm bone found in an ancient streambed in Pennsylvania is helping to answer one of evolution's great questions.

«Details of the upper arm bones tell us about how features of the flightstroke seen in living species came to be.»

Burrowers have such an extreme lifestyle that they develop very distinctive skeletons, which have characteristics like longer arm bones and probing fingers, she says.

To my great surprise, I immediately noticed clear dicynodont jaw and arm bones among these supposed «dinosaur» fossils,» says Kammerer.

The other extends from the chest bone to the upper arm bone via a tendon.

Every time you lower the bar with flared elbows, the top of your upper arm bone squeezes your rotator cuff tendons against your AC joint, which over time contributes to an inflamed rotator cuff and shoulder impingement.

The humerus — or upper arm bone moves around in the relatively shallow glenohumeral joint making a ball and socket articulation.

One end of your pecs is on your sterum and the other is here on upper arm bone as shown in the below diagram:

The glenoid labrum is a fibrous ring of tissue which attaches to the rim of the glenoid shallow hole or socket of the shoulder blade where the ball of the humerus or arm bone sits.

Release the heads of the upper arm bones away from this pressure as you dig the shoulder blades into the back, away from the strap.

When your elbows splay, the heads of your upper arm bones tend to collapse forward, causing congestion around the neck and upper back — both elements you'll want to avoid in Dolphin and other inversions.

Inhale; root your upper arm bones down and back by your sides.

Keep the elbows in line with the shoulders so the upper arm bones remain perpendicular to the floor.

Lightly shrug your shoulders up, strongly roll the heads of your upper arm bones back, and press the bottom tips of your shoulder blades into your back.

Here, the lower arm bone of a Supersaurus is being sampled with a core drill.

Fossil arm bones from a hadrosaur (likely Hadrosaurus foulkii, although its cousin Rhinorex is shown here) suggest the dinosaur developed septic arthritis — possibly after a predator's attack.

They scanned the two arm bones with x-ray microtomography, looking both along the length and then taking cross-sections within the bones.

In 1997, Svante Pääbo of the Max Planck Institute for Evolutionary Biology in Leipzig, Germany, and colleagues announced that they had extracted 379 base pairs from mitochondrial DNA in a Neanderthal arm bone.

In the new study, the researchers found that a fractured arm bone in newborn mice rapidly realigned through substantial movement of bone fragments rather than through bone remodeling — a slower process involving the simultaneous formation of new bone on one side and erosion of existing bone on the opposite side.

But as Kappelman looked closely at the bones in 3D models, he noted a striking pattern in the way the head of the upper right arm bone, or humerus, had collapsed as it was shoved into the bone's long shaft.

Imagine someone is lifting your armpits or upper arm bones up.

It originates at your clavicle, ribs, and sternum, and inserts into the upper portion of your humerus (upper arm bone from elbow to shoulder.)

When the two researchers first caught sight of the embryo's sturdy upper arm bone and extremely long fourth finger, they «immediately recognized it as belonging to a pterosaur,» Zhou recalls.