Hair is an accessory organ.
Hair comes from hair follicles which is a type of organ.
Hair is an accessory organ of the skin made of columns of tightly packed dead keratinocytes found in most regions of the body.
The accessory structures of the skin, including the hair, nails, sweat glands and sebaceous glands, play an important role in the skin's key functions.
Hair is made of a tough protein called keratin.
A hair follicle anchors each hair into the skin.
The hair bulb forms the base of the hair follicle.
In the hair bulb, living cells divide and grow to build the hair shaft.
In biology, an organ is a collection of tissues joined in a structural unit to serve a common function.
In the hierarchy of life, an organ lies between tissue and an organ system.
Tissues are formed from same type cells to act together in a function.
The brain is also an organ and one of the most complex organs in the human body.
The brain is a complex organ that controls thought, memory, emotion, touch, motor skills, vision, breathing, temperature, hunger and every process that regulates our body.
Together, the brain and spinal cord that extends from it make up the central nervous system, or CNS.