How the body works ( under construction )

The four basic processes

Digestion , Absorption , Assimilation , Elimination

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Body Systems : structures and functions

Endocrine system , Muscular system, Nervous system , Reproductive system , Respiratory system , Skeletal system

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Cells

How nutrients enter cells

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Cardiovascular system and the blood

Heart , vascular system , blood

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Endocrine glandular system

Pineal gland , thyroid , parathyoids , thymus, adrenal glands , pancreas , ovaries , testes , endocrine hormones

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