Dermis Flashcards
What are the two layers within the dermis layers?
Papillary and Reticular
Describe the papillary layer
Superficial layer
Areolar connective tissue
Thinner of the 2 layers
Location of the dermal papillae
Describe the reticular layer
Deeper layer
Dense irregular connective tissue
Thicker of the 2 layers
Describe characteristics of the nail
Accessory structure
Nailplate: overlies nail bed
Nail bed: surface of skin under nail plate
Lunula: most active growing skin
Describe characteristics of the hair follicles
Tune-like depression
3 Parts of the hair
Hair bulb, hair root, and hair shaft
Hair color depends on type and amount of melanin
What are the sebaceous glands?
They are holocrine glands, usually associated with hair follicles l.
They produce sebum which consists of fatty material and cellular debris
What is sebum?
It’s a fatty material that keeps hair and skin soft and waterproof
If there is excess sebum then it leads to acne
What is the name of the disorder of sebaceous glands ?
Acne vulgaris
Which glands are widespread in the skin, originate in the deeper dermis and hypodermis as ball shaped coils?
Sweat glands
Describe the eccrine (merocrine) glands
They are the most numerous
They respond to elevated body temperature
Describe the apocrine sweat glands
Axilary and groin areas
Respond to emotions