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components of integumentary system (3) ✔✔skin hair nails largest organ in the body ✔✔skin layers of skin ✔✔epidermis dermis hypodermis outer layer of skin ✔✔epidermis middle layer of skin ✔✔dermis inner layer of skin ✔✔hypodermis functions of skin (3) ✔✔1. protection from pathogens 2. production of vitamin D
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components of integumentary system (3) ✔✔skin hair nails largest organ in the body ✔✔skin layers of skin ✔✔epidermis dermis hypodermis outer layer of skin ✔✔epidermis middle layer of skin ✔✔dermis inner layer of skin ✔✔hypodermis functions of skin (3) ✔✔1. protection from pathogens
what type of cells make up the epithelium? ✔✔stratified squamous stratified squamous epithelium ✔✔layers of flat cells is the epidermis vascular or avascular? ✔✔avascular receives nutrients from basement membrane 4 distinct layers of epidermis (superficial to deep) ✔✔1. stratum corneum
Subcutaneous injection ✔✔medication of vaccination is to be given in a needle that reaches deep the dermis, but superficial to the muscle dermatone ✔✔region of skin innervated by one sensory nerve where is information gathered from a dermatome sent? ✔✔skin --> spinal cord --> brain two parts of hair ✔✔root shaft what layer of skin is root of hair located in ✔✔dermis layer the root of the hair begins at the ✔✔hair bulb gland found in root of hair ✔✔oil gland - hydrate hair with oil shaft of hair ✔✔extends through epidermis to external surface of skin hair is made up of cells that are converted to keratin ✔✔dead epidermal
arrector pili muscle ✔✔-Smooth muscle that contract when the body is cold or experiences emotional responses
fibroblast function in tissue repair ✔✔secrete new collagen in shape of old tissue what is the finale phase of wound healing called? ✔✔remodeling remodeling stage of tissue repair ✔✔tissue matures and cells begin to take original functions scar ✔✔overgrowth of fibrous connective tissue that cannot be fully replaced by the original tissue First degree burns ✔✔-superficial burns
layers of skin damaged with third degree burn ✔✔-epidermis
