Birds have pneumatic bones.
The pneumatic bones are where the air sacs, part of the respiratory system, connect with some of the longer bones. These bones are hollow to help with flight.
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All its bones.
Younger animals have a higher percentage of cartilage and other connective tissues.
Animals like insects, have exoskeletons-basically they have no bones, and only have tough,protective, often shell like skin. Animals like cats, dogs, horses, giraffes and and birds are all endoskeletons- they have bones, and those bones are internal (on the inside of the skin).
pneumatic bones reduces the corporal density of animal faciliating flights
The pneumatic bones are where the air sacs, part of the respiratory system, connect with some of the longer bones. These bones are hollow to help with flight.
Nasal cavaties
The phylum that has the adaptive feature of pneumatic bones is Chordata. Pneumatic bones are lightweight structures filled with air that help reduce the weight of the skeleton, making it easier for organisms to fly or swim, such as in birds.
Birds have some bones in their bodies that are "hollow." These are called pneumatic bones, and they help birds breathe when they are in flight. The bones of the pelvic girdle, some ribs, the humeru,s and the femur all are pneumatic.
The pneumatic bones are where the air sacs, part of the respiratory system, connect with some of the longer bones. These bones are hollow to help with flight.
Invertebrate animals are animals that have NO bones, such as crabs. Vertebrate animals are animals that HAVE bones, such as dogs.
Bone marrow is absent in birds, because they have pneumatic bones
All animals have bones.
Not really. It does have a hydro-skeleton where it uses pneumatic pressure to move along.
It depends on which animal you are talking about. Some animals without bones are larger than animals with bones. Compare the Giant Pacific Octopus with a mouse.
It's the same thing as a hollow bone. That's one of the characteristics birds posse than enables them to fly (if their bones had the same weight as ours, they wouldn't be able to lift). Some dinosaurs had the same type of bones. Hope it helped.