What are the ~200 types of cells in the human body?

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Detailed Solution

The human body has about 200 different types of cells, each specialized to perform unique functions.

Though all cells share basic structures, they vary in size, shape, and role. This specialization allows humans to perform complex tasks like thinking, moving, and fighting diseases. Below are some major categories:

Examples of cell types:

Category	Examples	Function
Muscle cells	Skeletal, cardiac, smooth	Movement and pumping blood
Nerve cells	Neurons, glial cells	Transmit signals, control body functions
Blood cells	Red blood cells, white blood cells, platelets	Carry oxygen, fight infection, clot blood
Epithelial cells	Skin cells, lining cells	Protection and absorption
Reproductive cells	Sperm, egg cells	Reproduction and passing genes
Bone cells	Osteoblasts, osteocytes	Provide strength and structure
Stem cells	Embryonic, adult stem cells	Differentiate into other cell types