Page 3 - Lesson Note

Nerve cells: Long and branched, help in transferring information from different parts of
the body to brain or spinal cord and vice-versa. Thus, they play an important role in
control and coordination of different parts of our body .

Bone cells: Spider shaped, found in skeletal system(Bones)

SIZE OF CELLS: Mostly, the cells are microscopic in size, meaning, we can view them
under microscope. The size is measured in micrometer or micron. One micron is as
small as thousandth of a millimeter or millionth of a meter. The smallest cells are
bacterial cells having the size of 0.1 to 0.5 micron. The size of the largest cell is
Ostrich’s egg having the dimension of 170mm*130mm. Hen’s egg is made up of one