Hair Your heart stops, your blood goes cold and your limbs stiffen. Yet amidst signs that you are no more, your fingernails continue to lengthen and your hair grows – or so we’re told. Have you wondered about your hair and how it grows? Most of all have you wondered does your hair grow when you're dead. Did you know the only "living" portion of the hair is found in the follicle. The hair that is visible is the hair shaft, which exhibits no biochemical activity and is considered "dead". The base of a hair's root (the "bulb") contains the cells that produce the hair shaft.
How your Hair Grows
Have you ever wondered how your hair grows. Your hair grows from the follicle, or root, underneath the skin. The hair is fed by blood vessels at the base of the follicle, which give it the nourishment it needs to grow. Between starting to grow and falling out years later, each hair passes through four stages: anagen, catagen, telogen and exogen. Anagen is the growing phase. This phase lasts 2 to 7 years and determines the …show more content…
We all know that it not only plays a vital role in the appearance of both men and women, but it also helps to transmit sensory information as well as create gender identification.By week 22, a developing fetus has all of its hair follicles formed. At this stage of life there are about 5 million hair follicles on the body. There are a total of one million on the head, with one hundred thousand of those follicles residing on the scalp. This is the largest number of hair follicles a human will ever have, since we do not generate new hair follicles anytime during the course of our lives. Most people will notice that the density of scalp hair is reduced as they grow from childhood to adulthood. The reason: Our scalps expand as we grow. Hair has two distinct structures - first, the follicle itself, which resides in the skin, and second, the shaft, which is what is visible above the
How your Hair Grows
Have you ever wondered how your hair grows. Your hair grows from the follicle, or root, underneath the skin. The hair is fed by blood vessels at the base of the follicle, which give it the nourishment it needs to grow. Between starting to grow and falling out years later, each hair passes through four stages: anagen, catagen, telogen and exogen. Anagen is the growing phase. This phase lasts 2 to 7 years and determines the …show more content…
We all know that it not only plays a vital role in the appearance of both men and women, but it also helps to transmit sensory information as well as create gender identification.By week 22, a developing fetus has all of its hair follicles formed. At this stage of life there are about 5 million hair follicles on the body. There are a total of one million on the head, with one hundred thousand of those follicles residing on the scalp. This is the largest number of hair follicles a human will ever have, since we do not generate new hair follicles anytime during the course of our lives. Most people will notice that the density of scalp hair is reduced as they grow from childhood to adulthood. The reason: Our scalps expand as we grow. Hair has two distinct structures - first, the follicle itself, which resides in the skin, and second, the shaft, which is what is visible above the