Stratum germinativum an active selselnya basal layer divide to form new skin cells to the outside . This layer produces the pigment melanin . Pigment that determines the color of one's skin . Melanin to protect the skin tissue in order to avoid the dangers of ultraviolet rays .
Stratum granulosum derived from pressure cells form in the lining Malpighi . At this layer to accumulate keratin . Keratin causes the cells in the lining of the nucleus is lost and eventually die .
Stratum corneum is contained in the surface layer of the skin . This layer is known as the stratum corneum is composed of dead cells that are ready to peel . The cells to be hard and resistant to water . In some places this layer thickened like thickening on the palms and soles of the feet .
Dermis tissue thicker than the epidermis . Dermis composed of connective tissue and collagen . Inside this layer there are sections such as blood vessels , hair follicles , sebaceous glands , sweat glands , nerve fibers , and a layer of fat subkutans .
Functioning of blood vessels to supply oxygen and nutrients to the epidermis and dermis tissue . In addition , blood vessels also plays an important role in regulating body temperature .
The hair follicle is a sac surrounding the hair roots . Of these follicles will grow black hair . The black color in hair is caused by the presence of melanin .
Functioning oil glands produce oil to prevent dryness of skin and hair , but it also protects the skin from bacteria . Skin that has fatty tissue ( adipose tissue ) , can serve as a backup food storage .
Sweat glands in the skin shaped like a coiled vessels , composed of cells that function to absorb fluid around capillaries and store it in the vessel . This gland is experiencing pressure to the skin surface and if there is a stimulus from the outside or from within the body will produce sweat .
There are sweat glands all over the body surface and the amount of approximately 2.5 million . Body surface is the least sweat glands are palms, fingertips , and facial skin . Sweat gland activity is under the influence of the temperature control center in the hypothalamus with brandikinin enzyme . Under normal circumstances , our bodies sweat as much as 50 cc per hour .
Sweat is water which contains salts and urea . Perspiration from the skin's surface to help reduce body temperature .
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