Skeletal System


Skeletal system consists of 206 bones. The most important function of this system constitutes an important or essential part of a structure, mineral consumption, and protection of soft tissues and production of blood.


Ossification is the procedure through which bone is created. Several bones such as the flat bones of the skull are formed in one stage from the connective tissue. This method is called as intramembranous or direct ossification.

Further bones such as short bones are developed from the skeleton composed by either entirely or mainly of cartilage model of the prospect bone developed in the kernel, organism disbanded and substituted by bone cells. This methodology is termed as endochondral or indirect ossification i.e. various bones are formed in this way.


Bones and cartilage are simply firm material in the human body that forms the skeleton. The 206 bones of the skeleton present in the human body present a structure and peak of addition for various soft tissues of the body. The five major categorization of bones are: Long like femur, Short like any of the group of bones forming the ankle joint tarsus, Flat like anterior bone of the skull, regular like vertebrae and Sesamoid like knee cap.


These configurations shield some of the imperative tissues and efficient organs of the body. Archetypal illustration are:

Skull – shield the brain

Vertebrae – guards the spinal cord

Thoracic cage – defend the heart and lungs


Bones proceed as knob through movement and gives firm structures to which muscles are closed. The joints allocate movement among bones and these movements are unswervingly linked to the sort of joint and range of motion. Joint comes in one among the three places or categories:

 Fixed fibrous or Synarthroses like bones of the skull, Vaguely manageable or Amphiarthroses like symphysis pubis and generously movable or Diarthroses.

Generously Movable joints consist of four major groups: Ball and Socket like hip, Axis like elbow, Hinge like radius and ulna and Gliding like carpal joint of the wrist.

The bones of the skeletal system turn out to be thinner and comparatively weaker as a usual part of the growing old process. Every human being starts losing bone mass around the age of 30 and 40. Above this period of time, the number of bone building cells or commonly known as osteoblasts begins to diminish, whereas the number of osteoclasts i.e. cells that breaks down bones vestiges the same.

The steadiness among the activities of osteoblasts and osteoclasts is very important when it comes to the preservation of strength and bone health; when osteoclasts eradicate calcium faster than osteoblasts can place it, bones become feeble.

Ligaments are hard stringy group of tissue which join bone to bone and help alleviate a joint, the strongest tendon in the body being placed at the front of the vogue capsule, thwarting extreme backward movement of the legs.

Disease Related to Skeletal System:

Next articleOsteoporosis
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