Integumentary System Study Guide Flashcards
What is the Integumentary System?
the skin and its accessory structures
What is Epidermis?
the outer epithelial layer of skin
What is Dermis?
the thick layer of the skin beneath the epidermis
What is the Subcutaneous Layer?
the layer beneath the skin
What is Keratin?
the protein in epidermis, hair, and nails
What is Keratinization/ Keratinocytes?
the process by which cells form fibrils of keratin and harden
What is Melanin/Melanocytes
Dark pigment normally found in skin and hair
What are nails?
protective coverings on the ends of fingers and toes
What is the Nail Plate?
overlies the nail bed
What is the Nail Bed?
the nail plate overlies this
What is Lunula?
whitish, thickened, half-shaped region at the bast of a nail plate
What are Hair Follicles?
a group of epidermal cells at the base of a tubelike depression
What are Hair Roots?
the part of the hair extending from the surface to the dermis
What is a Hairshaft?
the remains constitute the structure that extends away from the skin surface
What is a Albinism?
when a person has the inherited condition of white hair and has no melanin at all