What are the dermis and epidermis responsible for?
The primary role of the dermis is to support the epidermis and enable the skin to thrive. It also plays a number of other roles due to the presence of nerve endings, sweat glands, sebaceous glands hair follicles, and blood vessels.
Is this protein found in the dermis or the epidermis?
The dermis makes up 90% of skin’s thickness. This middle layer of skin: Has collagen and elastin: Collagen is a protein that makes skin cells strong and resilient. Another protein found in the dermis, elastin, keeps skin flexible.
What protein does epidermis produce?
Keratinocytes – 90% of the epidermal cells are keratinocytes, cells which produce keratin, a fibrous protein. They are formed in the stratum basale and get pushed up toward the surface. They manufacture keratin precursors and keratin as they age.
What proteins make dermis?
The connective tissues in the dermis layer of the skin are made of collagen proteins.
What is the difference between the dermis and the epidermis?
The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone. The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands. The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue.
What protein fiber that is found in the dermis gives skin its flexibility and firmness?
161 Cards in this Set
| Coiled structures attached to hair follicles found in the underarm and genital areas that secrete sweat | Apocrine glands |
|---|---|
| What protein fiber is found in the dermis and gives skin its flexibility and firmness? | elastin |
| What hormone stimulates cells to reproduce and heal? | Epidermal growth factor (EGF) |
What is the function of the protein keratin?
A type of protein found on epithelial cells, which line the inside and outside surfaces of the body. Keratins help form the tissues of the hair, nails, and the outer layer of the skin.
What is the function of the dermis?
The dermis is a fibrous structure composed of collagen, elastic tissue, and other extracellular components that includes vasculature, nerve endings, hair follicles, and glands. The role of the dermis is to support and protect the skin and deeper layers, assist in thermoregulation, and aid in sensation.
What does the epidermis contain?
The epidermis of the skin is a constantly renewing stratified squamous epithelium. It consists mostly of keratinocytes, but also of Langerhans cells, melanocytes, and Merkel cells resting on a supporting dermis that contains the nerve and vascular networks, which nourish the epidermis.
