Integumentary
Cards (92)
- Integumentary Systemconsists of skin and and accessory structures such as hair, glands and nails.
- Integumentcovering
- Functions of Integumentary systemprotection, sensation, temperature regulation, vitamin d production, excretion
- Skinit is made up of two major tissue layers which are the epidermis and dermis
- Epidermismost superficial layer of skin
- Dermisa layer of dense irregular connective tissue lying deep to the epidermis
- 10-20On average, dermis is _____ thicker than epidermis.
- Epidermisskin layer that prevent water loss and resists abrasion
- Dermislayer of the skin responsible for most of the skin's structural strength
- Subcutaneous tissueskin rests on a layer of connective tissue called _____________, where it is not part of the skin but it does connect the skin to underlying muscle or bone
- stratified squamous epitheliumwhat type of tissue is the epidermis?
- Keratinizationprocess in which cells change shape and chemical composition when they become filled with the protein keratin, which makes the cell more rigid and durable
- Stratadistinct layers of the epidermis are called
- Stratum basaledeepest layer of epidermis, consists of cuboidal or columnar cells that undergo mitotic activity about every19 days
- Stratum Corneumthe most superficial layer of the epidermis consisting of dead cells filled with keratin
- Dandruffexcessive shedding of dead skin cells from the scalp
- Callusarea of thick hard skin due to being subjected to friction
- Cornin a bony prominence, the stratum corneum can be thicken to form a cone-shaped structure called _______
- Dermiscomposed of dense collagenous connective tissue containing fibroblasts, adipocytes and macrophages
- Cleavage Linesdirections in which the skin is most resistant to stretch due to the different orientation of collagen bundles
- Stretch Marksdevelop when skin is overstretched leaving lines visible in the epidermis, commonly happens when a person increase in size quite rapidly
- Dermal Papillaea fingerlike projection of the dermis that may contain blood capillaries that supply the epidermis its vasculature
- Intradermal Injectionadministered by drawing the skin taut and inserting a small needle at a shallow angle into the dermis
- Subcutaneous injectionachieved by pinching the skin to form a tent and inserting a short needle into the adipose tissue of the subcutaneous region
- Intramuscular injectionaccomplished by inserting a long needle at a 90 degree angle to the skin into a muscle deep to the subcutaneous tissue
- Melaningroup of pigments primarily responsible for skin, hair and eye color
- Melanocytesirregularly shaped cells with many long processes that extend between epithelial cells of the deep part of the epidermis which produces melanin
- MelanosomesGolgi apparatuses that package or carry granules that produce melanin
- SameDifferent races have ________ number of melanocytes.
- Albinismrecessive genetic trait that causes a deficiency or an absence of melanin
- Ultraviolet LightExposure to sun's ____________ stimulates melanocytes to increase melanin production
- Suntanbrowning of the skin from exposing it to the sun
- Cyanosisa bluish discoloration of the skin resulting from poor circulation or inadequate oxygenation of the blood.
- Birthmarkscongenital disorders of blood vessels in the dermis
- Carotenethe yellow pigment of the skin
- Hypodermisthe subcutaneous tissues is sometimes called _______ which means "under the dermis"
- Adipose Tissuefunctions as padding and insulation in the subcutaneous tissues which is responsible for some differences between men and women appearance
- 21% to 30%Acceptable percentage of body fat for females
- 13% to 25%Acceptable percentage of body fat for males
- Haircompressed, keratinized cells that arise from hair follicles, the sacs that enclose the hair fibers