According to BBC, an endoskeleton is a bone structure located in the interior of an animal, and an exoskeleton is a bone structure located on the exterior of an animal. Each type of skeleton has unique advantages and disadvantages in helping the animal survive.Know More
Some animals, like jellyfish and worms, do not have a skeleton. Their bodies, therefore, are more susceptible to damage from predators or the environment. Skeletons can be internal or external and aid in functions like movement and muscular development. Endoskeletons exist on the inside of an animal. They are less protective than exoskeletons, but they are able to support heavy weights and sizes while remaining lightweight. Another advantage of endoskeletons is that they grow as the organism grows in size. An animal with an endoskeleton never has to undergo molting, or bone shedding. Humans, dogs and fish are examples of animals with endoskeletons.
Exoskeletons exist on the outside of an animal. This skeleton serves as a hard outer coating that helps protect the animal from predators and the environment. This outer coating is made from a durable substance called chitin. The exoskeleton covers the muscles and soft tissue of the animal, providing better leverage for muscular movement. As the animal increases in size, however, the exoskeleton becomes too heavy and restricts growth. Thus, the exoskeleton must be shed and regrown. This molting process takes place various times over the lifetime of the animal. Insects, crustaceans and arachnids are examples of animals with exoskeletons.Learn more about Bones
According to the University of Michigan, the differences between compact and cancellous bones are structure and location. Compact bone is denser than cancellous bone, found along the shafts of bones and covering cancellous bone, which is found at the end of joints. Compact bone is also made of osteons while cancellous bone is made of trabeculae.Full Answer >
Compared to female skeletons, male skeletons are larger and heavier, and they have more bone development around muscle attachment points. Male bones are longer, thicker and more robust. However, the biggest difference is in the pelvis. The pelvis on a female skeleton is larger and more open, the direct result of the childbearing role.Full Answer >
Coming from the Latin word fractura, which means broken bit or fragment, broken bones and fractures are the same thing, according to the Manhattan Orthopedic & Sports Medicine Group, PC. There are three different types of fractures or broken bones that occur: stress fractures, displaced fractures and non-displaced fractures. While stress fractures and non-displaced fractures typically heal without operation, displaced fractures require surgery.Full Answer >
Human and animal bones are distinguished by gross skeletal anatomy, bone microstructure and bone macrostructure. Some human and animal bones are quite similar, making it difficult to identify isolated and fragmentary bones in the lab and the field. The three levels of classification help make distinctions among the most similar animal and human bones.Full Answer >