The human body requires seven major<span> types of nutrients. Not all nutrients provide energy but are still </span>important<span>, such as water and fiber. Micronutrients are </span>important<span>but required in smaller amounts. Vitamins are essential organic compounds that the human body cannot synthesize.</span>
It's an osteoclast a very large cell formed in bone marrow it's function is to absorb and remove unwanted tissue.
Nervous System
<span>Respiratory System
</span><span>Circulatory System
</span><span>Digestive System
</span><span>Urogenital System
</span><span>Endocrine System
</span><span>Immune System</span>
