1.6B Integumentary System Flashcards
Vitamin synthesized by skin cells needed in calcium metabolism and bone formation
Vitamin D
Embyological origin of epidermis
Ectoderm
Embryological origin of dermis
Mesoderm
Classification of subcutaenous tissue/hypodermis/subcutis
Loose CT
finger-like projections which anchor the epidermis to the dermis; responsible for finger printss
Rete ridges
Layer of the epidermis responsible for constant regeneration of other layers in the dermis; mitotic division
Stratum basale
Thickest epidermal layer where polyhedral keratinocytes are found; synthesizes keratin
Stratum spinosum
Layer of epidermis only found in thick skin
Stratum lucidum
Epidermal layer consisting of flat flakes and sheets of keratin; anuclear; touch protective layer in directcontact with outside environment
Stratum corneum
Clinical skin condition where there is abnormal increase in the number of proliferating cells in the basal layer; autoimmune disease tiggered by stresses
Psoriasis vulgaris
A depigmentation idsorder resulting from degeneration and disappearance of melanocytes
Vitiligo
Hereditary inability of the melanocytes to synthesize melanin; caused by absence of tyrosinase activity
Albinsim
Layer of the dermis that contains mast cells, wbcs, and macrophages; more ground substance and fibroblasts
Papillary layer of the dermis
Layer of dermis made of dense irregular connective tissue, contains blood vessels, nerve and skin appendages; stains more deeply; responsible for skin elasticity
Reticular layer
Sweat gland found in most surfaces of the body except in axilla, areola, and anal regions
Eccrine glands
