-Surface area to volume ratio. (surface area / volume)
-Nucleo-cytoplasmic ratio.
-Fragility of cell membrane.
-Mechanical structures necessary to hold the cell together (and the contents of the cell in place)
<em>it is the inflammation of joints mostly present in hands , feet and arms ..
the cause of this disease is
<u>D . autoimmune reaction ..</u>
</em>
Circulatory system.....circulates blood (a vital delivery system of oxygen) throughout the whole body when tissues need it the most and with a constant supply.
