Skeletal System



Skeletal System

Introduction

The human skeletal system consists of a major and salient part known as bones. Human beings are born with 270 bones. This is the final number of bones developed after a child has taken birth. In early time of pregnancy, when child is developing and going through different stages have even more number of bones. With the passage of time, a child is reached the stage of adolescence, multiple bones are separated and fused together and eventually this number is decreased to 206 bones, which forms an adult skeletal system.

Discussion

The further division of the human skeletal system makes up two parts; “axial skeleton” and “appendicular skeleton.” Axial system consists of the bones of the vertebral column, skull, and the thoracic cage. The other part, appendicular skeleton consists of upper and lower edges with their related girdles. The synopsis of the bones present in an adult skeletal system is given in table 1. There are some marks of identifications, through which the location of specific type of bone is recognized. These marks entail; spines, ridges, pores, depressions, bumps, furrows, and coherent structures on the facade of bones. The function of these structures is to provide a path of nerves and blood vessels, for joints, and for association of tissues, tendons, and muscles. Thus, a brief knowledge of these structures will be important information, when focusing the function and structure of these façade aspects. A number of common marks of identifications are listed below with their description.

Head: Prominent extended end of a bone, at times in circle shape

Spine: Slender, sharp, or narrow

Epicondyle: Protrusion greater to a condyle

Foramen: Fissure through a bone, generally in circle shape

Summary of the Bones in an Adult Skeletal System (Total: 206 Bones)

Axial Skeleton - 80 Bones

Appendicular Skeleton - 126 Bones

Skull and Hyoid: 23 bones

Pectoral Gridle: ...