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Our human
body (as organisms consist of 11 main separate yet closely interconnected
systems; namely, the Skeletal, Muscular, Circulatory, Respiratory, Digestive,
Excretory, Nervous, Immune, Endocrine and Reproductive Systems. These work together
to perform different functions and to make a complete functional organism

Firstly,
the significance of the skeletal system is its vital structural purpose to the
human body. In addition the skeletal system stores minerals, produces blood
cells and provides protection for delicate organs. The systems consists of 206
bones are joined through with ligaments, tendons, with cartilage, a softer
cushion like material, providing protection in jointed areas and muscles-
linking to the muscular system . Moreover, the muscle completely aid movements
and are controlled by the muscular system, with these muscles being connected
to bones. Nevertheless, the basis for those movements is rooted in stimulation proved
by nervous system. The nervous system causes contraction and the resulting
movement of bones to which they are attached. In addition, key involuntary
muscles uphold the respiratory and circulatory systems, by consistently
providing contraction of the heart and lungs. The circulatory system’s main organ
is the heart. The heart is so vital as is essentially pumps blood through arteries,
veins and capillaries. Furthermore, notably circulatory systems is important ;
the  nutrients and oxygen to cells and waste
products are removed hence aiding the immune system through the circulation of
white blood cells the circulatory system is responsible for delivering. The
immune system main role is to stop the body from being corrupted or attacked
with pathogens. Key components are lymph organs, such as the spleen and thymus,
and the skin, all of which are responsible for protecting the body against
invading pathogens

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Furthermore,
the relationship of circulatory system and the respiratory system is close also.
The respiratory system brings oxygen from the surrounding air into the body
through the alveoli of the lungs. This also links closely to excretory system. It
is tasked for the removal of waste gases (i.e. CO2) through exhalation.
Ultimately this eliminates both solid and liquid wastes. Moreover, gaseous
products, and is made up of a number of specialist tissues along with the
bladder, large intestine, rectum, kidney, lungs. The digestive system is solely
tasked with the physical and chemical breakdown of food. This journey starts in
the mouth- physical breakdown as well as salivary (chemical) breakdown, then travels
through the oesophagus to the stomach (stomach muscles aid in physical
breakdown, while acid {HCL}), and small intestine for digestion. Additionally,
production of digestive enzymes and bile in the liver, pancreas and large
intestine are also involved, through the and the processing nourishment (nutrients)
for the body.

The purpose
of nervous system is delivering impulses the brain through neurons. The bodies
movement and functions are fuelled by electrochemical signals through the
neural network all playing key role in the nervous system .The way the nervous
system intercepts’ with  endocrine system,
is  through communication network however
utilising hormones as chemical signals which travel through the blood . Hormones
specifically target organs and carry signals to start or stop performs functions.
As a result, the reproductive system produces of children and reproductive
hormones cause our bodies to develop into sexual maturity.

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