#integumentary_system__integumentarysystem  the skin and its appendages
  supertype:  system.body_part  a group of physiologically or anatomically related organs or parts; "the body has a system of organs for digestion"
  part:  tegument__skin__cutis__cuti  a natural protective covering of the body; site of the sense of touch; "your skin is the largest organ of your body"
     part:  epidermis__cuticle  the outer layer of the skin covering the exterior body surface of vertebrates
        part:  epidermal_cell__epidermalcell  any of the cells making up the epidermis
        part:  stratum_corneum__stratumcorneum__corneum__horny_layer__hornylayer  the outermost layer of the epidermis consisting of dead cells that slough off
        part:  stratum_lucidum__stratumlucidum  the layer of epidermis immediately under the stratum corneum in the skin of the palms and soles
        part:  stratum_granulosum__stratumgranulosum  the layer of epidermis just under the stratum corneum or (on the palms and soles) just under the stratum lucidum; contains cells (with visible granules) that die and move to the surface
        part:  stratum_germinativum__stratumgerminativum__stratum_basale__stratumbasale__malpighian_layer__rete_Malpighii  the innermost layer of the epidermis
     part:  skin_cell  any of the cells making up the skin
     part:  dermis__corium__derma  the deep vascular inner layer of the skin
     part:  macule__macula  a patch of skin that is discolored but not usually elevated; caused by various diseases
     part:  freckle__lentigo  a small brownish spot (of the pigment melanin) on the skin
     part:  liver_spot__liverspot  a type of skin disease that causes brown spots on the skin
     part:  whitehead__milium  a small whitish lump in the skin due to a clogged sebaceous gland
     part:  blackhead__comedo  a black-tipped plug clogging a pore of the skin
     part:  pore.duct  any small opening in the skin or outer surface of an animal
     part:  scab  the crustlike surface of a healing skin lesion
     part:  sweat_gland__sweatgland__sudoriferous_gland  any of the glands in the skin that secrete perspiration
     part:  free_nerve_ending  microscopic sensory nerve endings in the skin that are not connected to any specific sensory receptor
     part:  Pacinian_corpuscle  a specialized bulblike nerve ending located in the subcutaneous tissue of the skin; occurs abundantly in the skin of palms and soles and joints and genitals
     part:  wrinkle__furrow__crease__crinkle__seam__line  a slight depression in the smoothness of a surface; "his face has many lines"; "ironing gets rid of most wrinkles"
  part:  hair  dense growth of hairs covering the body or parts of it (as on the human head); helps prevent heat loss; "he combed his hair"
     part:  hairline  the natural margin formed by hair on the head
        part:  widow's_peak__widow'speak  a V-shaped point in the hairline in the middle of the forehead
     part:  part.line  a line where the hair is parted; "his part was right in the middle"
  part:  sebaceous_gland__sebaceousgland__sebaceous_follicle__sebaceousfollicle__glandulae_sebaceae__glandulaesebaceae  a cutaneous gland that secretes sebum (usually into a hair follicle) for lubricating hair and skin
  part:  nail.horny_structure  horny plate covering and protecting part of the dorsal surface of the digits
     part:  lunule__half-moon__lunula  the crescent-shaped area at the base of the human fingernail
     part:  matrix.animal_tissue  the formative tissue at the base of a nail

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