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anatomical variations. The most common variations include additional (i.e. supernumerary) cervical ribs or lumbar vertebrae. Sesamoid bone counts also may vary among individuals. The figure of 206 bones is commonly repeated, but must be noted to have some peculiarities in its method of counting. As noted below, the craniofacial bones are counted separately despite the synostoses, which occur naturally in the skull. Some reliable sesamoid bones (e.g., pisiform) are counted, while others (e.g., hallux sesamoids) are not. The count of bones also changes with age, as multiple ossific nuclei joined by synchondroses fuse into fewer mature bones, a process which typically reaches completion in the third decade of life. A joint or articulation (or articulate surface) is the location at which bones connect. They are constructed to allow movement (except for skull, sacral, sternal, and pelvic bones) and provide mechanical support, and are classified structurally and functionally.'10
Acharya Shivarya carries on his description by stating that there are nine hundred nerves, seven hundred blood vessels (arteries or veins or capillaries) and five hundred muscles. There are four groups of nerves (shira jala), sixteen sinews (principal vessels or large arteries), six roots of nerves and two cords of muscles (mansa rajju) in the body, one rests at back and other on stomach."
Scientists believe that- The blood vessels are the part of the circulatory system that transports blood throughout the human body. There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart.12
They say about muscles that- There are approximately 642 skeletal muscles within the typical human, and almost every muscle constitutes one part of a pair of identical bilateral muscles, found on both sides, resulting in approximately 320 pairs of muscles. Nevertheless, the exact number is difficult to define because different sources group muscles differently, e.g.
