The skeleton dog March 7, 2014 at 8:54 pm

The dog skeleton are two basic types of bone. Long bones (such as limb bones ) and bones flat ( skull , pelvis , shoulder) . Although the basic design has not changed since the inception of the genre , the limbs were significantly transformed . Think of the difference between the silhouette of a dachshund and a St. Bernard . The cause is the fact that the man selectively bred dogs, whose bones were different length and thickness.The role of the skeletonThe skeleton is a bony lever system , discussed the muscles attached to them . The bones are connected by joints that act as shock absorbers. They have a complicated structure, which gives them great stability while allowing movement . Ligaments are attached , which allow for some degree of movement in certain directions .Each pond is surrounded by a joint capsule containing synovial fluid . The ends of the bones of the joint belonging to the cartilage covered with a smooth surface. Thanks to her, and the presence of synovial fluid friction within the joint working is minimal, and by its flexibility eases as any shock .The development and growth of bonesLong bones in the embryo has its origin as the structure of cartilage , which are replaced with the correct bone in the later weeks of pregnancy . Limb bones can be considered as a tubular structure of the joint ( joint) at both ends. Part of diaphyseal does not belong to the pond is covered with a hard, fibrous periosteum . In young , growing dogs inner layer of the periosteum is actively growing and building bone increases its diameter. To tubular bone does not become too thick and heavy , the older part of the tissue is resorbed , which maintains the proper wall thickness or cortical bone .When the dog stops growing , the activity of the periosteum almost disappears , to return again in the event of breakage in the place that you need to ” fix ” . To avoid weakening the bone as a result of this process , the interior is filled with fine bone trabeculae . The space between them is filled with a young animal’s bone marrow , replaces fat as they grow older dog.Bone elongates in the areas close to the joints, called growth plates where cartilage is still produced as a progressive layer as in the episode plate metaphyseal growth . The cartilage is converted into bone , and thus lengthens the bone . The majority of dogs aged 10 months long bone growth is complete.Bone growth requires fuel and it is supplied through the blood vessels . The main part of each bone is supplied by one or two arteries , penetrating through the so-called . Digestive hole in the shank bone. The hub receives blood from the arterial ring inside the joint capsule . These arteries penetrate the entire root bones to nourish the growing bone. They also provide food for the inner layer of articular cartilage , the rest of her food comes from the synovial fluid .

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