Anatomy Of Human Heart And Blood Flow To Organ Sauropod Dinosaurs With Their Heads Held High – The Debate Continues

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Sauropod Dinosaurs With Their Heads Held High – The Debate Continues

A new report on the status of sauropods

Sauropods, or to give their correct classification – Sauropoda, were long-necked, elephant-like herbivores, part of the Saurischia (lizard-limp) group of Dinosauria (dinosaurs). These animals are known to be the largest land animals ever known, with some of these animals, such as Brachiosaurus and Titanosaurs, Paralytans exceeding twenty-five meters in length and possibly weighing over fifty metric tons. They are the largest land-dwelling vertebrates of all time.

How these animals got their necks is debated

How these giant animals got their long necks is a hotly debated topic among paleontologists. Previously, it was believed that these animals could hold their necks very high, in an almost vertical position that has been described as a “swan neck”, but now most scientists have abandoned this view. Indeed, this interpretation of sauropod fossil bones is very favorable, with the view that these animals were so large that they had to live in water to support their weight.

A more traditional view of sauropods

The sight of these large animals living in swamps and lakes, allowing water to support their weight, has been widely discredited, but debate continues over how these animals used their necks. A study recently published in the scientific and academic journal “Biology Letters” examined the effect of dinosaur head position on its heart and blood pressure.

Magari provides evidence

Extant reptiles such as crocodiles and lizards have very different anatomical structures than dinosaurs. Living reptiles standing in their natural posture have their heads virtually level with their hearts. They can certainly raise their heads, but no living reptile has the extremely long neck or posture of a sauropod like Brachiosaurus. Modern reptilian hearts are different from human hearts. They cannot separate pulmonary (blood from the lungs and lungs) and systemic blood (blood circulating around the rest of the body), they do not have a fully divided, chambered heart. Most dinosaurs, from small theropods like Compognathus to large brachiosaurs, had their heads above their hearts. This meant that their hearts were fully divided, ensuring that there was enough blood pressure to pump blood to their elevated heads.

Australian scientists explore dinosauria

The new study, led by Dr Roger Seymour, an evolutionary biologist at the University of Adelaide, shows that the dinosaur’s head would have been so high above its heart that increasing the head and neck would have raised blood pressure – to potentially fatal levels. . The team argues that in the case of sauropods, for example, these large herbivores did not feed on high tree branches, but grazed with their heads and necks close to the ground, like cows. The scientists found that since lifting such long necks involved physical exertion, some of which could measure over fifteen meters in length, fifty percent of the energy gained from the sauropod’s diet would have been used for circulation alone.

Commenting on his study, Dr. Seymour said the large, long necks of giant sauropod dinosaurs are generally thought to have been used for browsing to get food from these huge animals. However, is high neck posture possible from an anatomical perspective?

By comparing the metabolic rate, blood flow and blood pressure of the dinosaurs, scientists estimated the energy required. The research team concluded that their study showed that a large, plant-eating sauropod had to expend half its energy to circulate the blood needed to pump the volume of blood up to the brain along a vertical neck. Blood pressure is very high in these reptiles.

In their findings, the team related the results to possible lifestyle and feeding habits of sauropods. Instead of browsing them in the tops of trees, he notes that the majority would have fed from the tops of the trees on plants near the ground. The team concluded that most sauropods would not have raised their heads much higher than their shoulders.

Sir Richard Owen discovered the anatomy of dinosaurs

This article contributes to the debate on the structure and metabolic rate of dinosaur hearts and the resulting consequences of endothermic applications. Sir Richard Owen commented in 1841 that dinosaurs may have led “more energetic lives” than extant reptiles. They concluded that their hearts may have been fully segmented like those of mammals and birds, and hinted at the possibility that dinosaurs were warm-blooded. – Blood with a high metabolic rate.

Sir Richard Owen suggested that because dinosaurs had adapted to a more upright terrestrial posture, their hearts were likely to be more complex than those of modern reptiles such as crocodiles, snakes and lizards. Sir Richard, though writing in the 19th century, was convinced that dinosaur hearts were endothermic, similar to highly active organisms such as mammals and birds. One hundred and seventy years later, most scientists agree with these conclusions. Dinosauria were active animals and most of them were warm blooded.

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