Shivam, skeleton is a protection to the soft tissues, muscles, tendons and the rest of the body. It is made of bones and joints. The skeletal system provides attachment points for muscles thereby allowing the movement at the joints. The red marrow inside the bone produces new blood cells. An adult body skeletal system is made up of 206 individual bones. These bones can be arranged into Axial skeleton and appendicular skeleton. Without the skeleton system, the body is just like a sponge which has absorbed water. It would have neither a frame nor a structure. The axial skeleton is made up of 80 bones covering the skull, hyoid, auditory ossicles, ribs, sternum and the vertebral column. The upper and lower limbs, pelvic girdle and the shoulder girdle constitute the appendicular skeleton and this is made up of 126 bones. Though the bone itself is a structure, they are of 5 types. Long bones, Short bones, Flat bones, Irregular bones and the sesamoid bones. The bones help in protecting the organs like heart, lungs from damage caused by external forces. They help in movement of joints. The skeletal system also stores quite a few different types of essential substances which facilitate growth and repair of the body.

Arpit, Human body is built up of 206 bones, more than 100 organs, 100 billion nerve cells, arteries, ventricles, vertebrae, etc. It is one of the complex mechanism and it is quite difficult to describe it here. We would suggest you to read any Human Physiology book like the one by Guyton or for Anatomy, you may read Gray's. These have detailed description of Human Anatomy and Physiology.

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The appendix sits at the junction of the small intestine and large intestine. ... Normally, the appendix sits in the lower right abdomen. The function of the appendix is unknown. One theory is that the appendix acts as a storehouse for good bacteria, “rebooting” the digestive system after diarrheal illnesses

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First of all what is muscle a muscle is a  band or bundle of fibrous tissue in a human or animal body that has the ability to contract, producing movement in or maintaining the position of parts of the body.

There are basically 3 types of muscles present in human body

1. Skeletal muscles (which moves us) :- Skeletal muscle is a voluntary muscle, which means that we can actively control its function. It's attached to the bone and forms a distinct organ of muscle tissue, blood vessels, tendons, and nerves that covers our bones and allows movement.

2. Cardiac muscles ( which moves our blood ) :-Cardiac muscle also called heart muscle or myocardium.

3. Smooth muscles (which moves our bowels etc. ) :- Smooth muscle fibers are located in walls of hollow visceral organs, except the heart, appear spindle-shaped, and are also under involuntary control.

There are about 700 named skeletal muscles in the human body, including roughly 400 that no one cares about except specialists. There is just one important cardiac muscle. There are literally countless smooth muscles which do the work of the autonomic nervous system, mostly squeezing and squishing stuff in tubes.

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Skeleton System In Human Body and Bones :- It can be explained as the system which includes all the bones and the joints in the body is known as the skeletal system. The skeletal system includes all of the bones and joints in the body. Each bone is a complex living organ that is made up of many cells, protein fibers, and minerals. The skeleton acts as a scaffold by providing support and protection for the soft tissues that make up the rest of the body. There are two skeletal divisions Axial Skeleton and Appendicular  Skeleton.

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The human skeleton is the internal framework of the human body. It is composed of around 270 bones at birthand decreasesto 206 when adult.. It can be divided into axial skeleton and appendicular skeleton.

The axial skeleton is formed by  vertibral column ( 30 -34 bones) , rib cage ( 12 pair of ribs) and skull ( 22 bones and 7 associate bones) and other bones. It contain 80 bones .

The appendicular skeleton is formed by shoulder gridle, pelvic gridle and bones of upper and lower limbs. It consists of 126 bones

The human skeleton is made up of 206 bones, including bones of the:

• Skull – including the jaw bone
• Spine – cervical, thoracic and lumbar vertebrae, sacrum and tailbone (coccyx)
• Chest – ribs and breastbone (sternum)
• Arms – shoulder blade (scapula), collar bone (clavicle), humerus, radius and ulna
• Hands – wrist bones (carpals), metacarpals and phalanges
• Pelvis – hip bones
• Legs – thigh bone (femur), kneecap (patella), shin bone (tibia) and fibula
• Feet – tarsals, metatarsals and phalanges.
• There are four different types of bone in the human body:
• Long bone – has a long, thin shape. Examples include the bones of the arms and legs (excluding the wrists, ankles and kneecaps). With the help of muscles, long bones work as levers to permit movement.
• Short bone – has a squat, cubed shape. Examples include the bones that make up the wrists and the ankles.
• Flat bone – has a flattened, broad surface. Examples include ribs, shoulder blades, breast bone and skull bones.
• Irregular bone – has a shape that does not conform to the above three types. Examples include the bones of the spine (vertebrae)  .... Thanks..