Cell is the smallest part of living beings. The body is made up of millions of tiny cells. These are the building blocks of the body. A single is too small to be seen with a naked eye.
A microscope is needed to see the single cell. There are different kinds of cell. Cells differ in their shapes and functions. For example, skin cells, muscles are made up of muscle cells, bones, teeth, and mails are made up of different jobs. Cell wall, cell membrane, nucleus and cytoplasm are the basic parts of the cell.
Types of Human Cell:
Red Blood Cells: These are blood cells which form most of the part of our blood. These cells carry food and oxygen to other body parts to sustain life.
Liver Cells: Liver cells perform many functions like like glucose breakdown and protein and carbohydrate synthesis. They are found in liver which is one of the major organs of human body.

Brain and Nerve Cells:Brain controls the functioning of all the organs of the body. The brain and nerve cells create an electronic impulse for sending messages from brain to organs and vise versa.

Chief Cells:These types of cells are found in stomach and they produce gastric juices for the break down of food to make it usable for the different cells of the body and to supply energy.

Kidney Cells: These are purifying cells which are in two kidneys of the human body. These cells extract toxic chemicals from human blood and excrete it out of the body through urine.