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Hace 4 días · Pneumatic, hollow bones are a characteristic feature of all sauropods. These air spaces reduced the overall weight of the massive necks that the sauropods had, and the air-sac system in general, allowing for a single-direction airflow through stiff lungs, made it possible for the sauropods to get enough oxygen.
Hace 4 días · Allosaurus itself is based on YPM 1930, a small collection of fragmentary bones including parts of three vertebrae, a rib fragment, a tooth, a toe bone, and (most useful for later discussions) the shaft of the right humerus (upper arm).
14 de may. de 2024 · Archaeopteryx is known to have evolved from small carnivorous dinosaurs, as it retains many features such as teeth and a long tail. It also retains a wishbone, a breastbone, hollow thin-walled bones, air sacs in the backbones, and feathers, which are also found in the nonavian coelurosaurian relatives of birds.
Hace 3 días · The femur is the thigh bone, the largest and strongest bone in the human body. It supports the weight of the body and helps you move. Reaching from the hip to the knee, the femur is extremely hard and not easy to break.
25 de may. de 2024 · Flying birds have light skeletons with many hollow bones. Because ratites do not have to lift their bodies off the ground for flying, however, they have large bodies supported by heavy leg bones and thick strong feet adapted for running.
20 de may. de 2024 · If you’re short on time, here’s a quick answer to your question: Yes, chickens do have hollow bones. Their bones are lightweight and pneumatic, filled with air sacs that connect to their respiratory system. This hollow, porous bone structure helps make birds lightweight for flight.
14 de may. de 2024 · Cochlea: The cochlea is a hollow bone shaped like a snail. A membrane divides it into two fluid-filled chambers. When sound enters the chambers, it causes the tiny hairs lining the membrane to vibrate and send electrical impulses (sound signals) to the brain.
