skin anatomy
Terms
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- simple epithelium
- one layer of cells
- Stratified epithelium
- more than one layer of cells
- Squamous
- flat
- Cuboidal
- cube in symatry
- Columnar
- tall cells
- Pseudostratified
- columnar cells with nuclei in different lvls makes stratified appearance
- Endocrine gland
- no connection to outside surface, ductless glands, hormones
- Exocrine glands
- Retain their ducts and their sectretions empty through them to the surface.
- Mucous membrane
- composed of epithelium restion on loose connective tissue called LAMINA PROPRIA. Lines all body surfaces that lead 2 exterior
- Serous membranes
- Composed of simple squamous epi, resting on areolar connective tissue, lines inner cavities
- Visceral layer
- side of serous membrane that touches organ or structure
- Peritoneum
- Serous membrane that lines ABD cavity
- Pleura
- Serous mem that surrounds the lungs
- 2 Characteristics common of connective tissues
-
1. Well Vascularized
2. Extracellular matrix - Areolar tissue
- soft, pliable "cobwebby" tissue, cushions and protects body organs. Glue that holds internals together, all throughout the body.
- Dense Fibrous tissue
- Has collagen fibers as main matrex element TENDON
- Hyaline Cartilage
- TRACHEA blue/white, glassy
- Stratum Lucidum
- Full of Keratin, finger prints, soles of feet
- Statum Corneum
- outermost layer, skin
- Papillary layer of dermis
- Upper dermal region. Consists of: Dermal Papillae (fingerlike proj) and Meissner's Corpuscles (nerve endings)
- Reticular layer of dermis
- Deepest skin layer, contains blood bessels, sweat and oil glands and deep pressure receptors
- 1st degree burns
- only epidermis is involved
- 2nd degree burns
-
involves epidermis and upper region of the dermis
ie. blister - 3rd degree burns
- entire thickness of skin is destroyed, burned area appears blanched, grey white.
- 3 Criteria distinguished a critical burn
-
1. over 25% of the body has 2nd degree burn
2. over 10% of the body has 3rd degree burns
3. 3rd degree burns on face/hands/feet - Eccrine glands
-
produce sweat
thermoreg - Apocrine glands
- minimal role in thermoreg
- A needle would pierce the epidermal layers of the forarm in which order?
- Corneum, granulosum, germinatuvum
- mitosis is used as a basis for
- Growth and developement
- A needle would pierce the epidermal layer of the forearm in which order
- corneum, granulosum, germinatuvum
- The process of mitosis is used as a basis for
- growth and replacement
- What type of fibers are found in connective tissue?
- elastic fibers, collagen fibers, and reticular fibers