Can you check it, please.
A
1. Main layers of the skin are called epidermis and dermis
2. Epidermis is made up of flat cells of the epithelium
3. The epidermal cells are produced at in the deepest layer of the skin
4. The dermis is composed of ellasticelastic connective tissue
5. The dermis contains sweat glands, mammary gland and sebaceous gland.
6. Below the dermis lies layer of subcutaneous tissue which contains fat

B
Epidermis- the outer layer of the skin
Keratinization-The process by which vertebrate epithelial cells become filled with keratin protein filaments, die, and form tough, resistant structures such as skin, nails, and feathers
Melanin-The pigment that gives human skin, hair, and eyes their color
Fingerprints-the pattern of curved lines on the end of a finger or thumb.
Sebaceous gland-small organ in the skin that produces sebum
Sweat gland-small organ under the skin that produce sweat
Subcutaneous- existing under the skin

1. Skin is made up by epidermis and dermis
2. Cells of epithelial tissue are produced in the deepest layer of epidermis
3. Dermis is made up by connective tissue
4. Dermis contains networks of blood vessels and nerve fibers and sweat, sebaceous, mammary glands,
5. The deepest layer of dermis is made mainly of fat
1. Excessive sweating is a problem which revealed by hyperactivity of sweat glands. Most often it concern palms, feetsfeet and armpits
2. Sebum and perspiration contain substances which are harmful to bodies, that is why they are excreted
3. Vitamin B3 regulates excretion of sebum