BASIC THEORY
➡️ skin is made up of three layers :
⚠️Epidermis
⚠️Dermis
⚠️Subcutaneous layer(hypodermis)
➡️ epidermis has following layers(from deep to superficial )
🔎Stratum basale
this is the deepest layer it consists of a cuboidal or columnar cells. They show mitotic activity. They undergo mitosis and give rise to new melanocytes
🔎Stratum spinosum
Composed of polyhedral cells held togather by Desmosomes
🔎Stratum granulosum
made up of three to five layers of flattened, fusiform cells. They are filled with keratohyalin granules
🔎Stratum lucidum
it is made up of flattened, eosinophilic, dead cells. Cytoplasm of these cells are filled with keratin. This layer has a classy appearance
🔎Stratum corneum
it is the most superficial layer consists of non- -nucleated, dead, scaly, keratinized cells
Thick skin
💡 Thick epidermis (stratum corneum is thick)
💡 Hair follicles and sebaceous glands are absent
💡 sweat glands are present in epidermis
Thin skin
💡Thin epidermis (stratum corneum is thin)
💡Hair follicles and sebaceous glands are present
💡 sweat glands are present in dermis
