What layer of the skin is made up of keratinized stratified squamous epithelium (4-5 layers)?
Epidermis
What layer of the skin is made up of connective tissue (2 layers)?
Dermis
Subcutaneous layer, NOT apart of the skin, made up of Areolar and Adipose tissue.
Hyopdermis
What are the four main epidermal cell types?
Keratinocytes, Melanocytes, Langerhans cells, and Tactile epidermal (Merkel) cells
What epidermis cell type protects underlying tissues from abrasion, heat, microbes, and chemicals, and produces a hard protein called keratin?
Keratinocytes
What epidermis cell type absorbs UV light, prevents DNA damage, and produces a protein called melanin?
Melanocytes
What epidermis cell type is an intraepidermal macrophage involved in immunity?
Langerhans cells
What epidermis cell type has special touch receptors and has contact with sensory neurons?
Tactile epithelial (merkel) cells
An excessive number of keratinized cells shed from the skin of the scalp is called what?
dandruff
A disorder in which keratinocytes divide and move more quickly than normal is called what?
(results in flaky, silvery scales that form on the skin’s surface (knees, elbows, and scalp)
Psoriasis