Skeletal System This provides protection to the spinal cord, an attachment site for muscles, flexibility, and support, especially in tetrapods on land where he must support the weight of the body. Hardware, spool-shaped vertebral bones alternative to the intervertebral discs tough but flexible. Each typical vertebral body (centrum) has expanded neural spine curvature. Spinal cord runs through the arches, and spinal cord come through the room.
Bony processes and spines project from bone to muscle and ligament attachment. articulation joints between adjacent vertebrae to effectively limit and determine the range of motion of the spine. morphology of different vertebrae along the column. There are two regions are recognized in fish (trunk and tail) and five in mammals (cervical, chest, lumbar, sacral, and tail), reflecting regional specialization related to the function. Humans have seven cervical, twelve breast, five lumbar, five (fused) sacral, and four coccygeal vertebrae.
Most of the amphibians, reptiles, and mammals have seven neck bones apart from the long neck, while the number of variables in birds. special modifications for the first two cervical vertebrae in reptiles mostly, birds, and mammals provide additional mobility head. The presence of large ribs in the chest area often limit the flexibility of the spine. In a typical tetrapods, sacral region is usually modified to support the pelvic girdle, while the number of tail bones are very varied (00-50) between and within groups of animals. See also vertebrae.
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