Anatomy Ch 4

  1. function of body membranes
    §Cover body surfaces 

    §Line body cavities

    §Form protective sheets around organs
  2. cutaneous membrane 
    • SKIN
    • -Dry membrane 

    -Outermost protective boundary

    -Superficial epidermis is composed of keratinized stratified squamous epithelium

    • -Underlying dermis is mostly dense
    • connective tissue
  3. cutaneous membrane diagram
    Image Upload 1
  4. mucous membranes
    -Stratified squamous epithelium (mouth, esophagus) 

    -Simple columnar epithelium (rest of digestive tract)

    -Underlying loose connective tissue (lamina propria)

    -Lines all body cavities that open to the exterior body surface

    -Often adapted for absorption or secretion
  5. mucous membrane diagram
    hImage Upload 2
  6. serous mebranes
    -Surface is a layer of simple squamous epithelium 

    -Underlying layer is a thin layer of areolar connective tissue

    -Lines open body cavities that are closed to the exterior of the body

    -Serous membranes occur in pairs separated by serous fluid

    -Visceral layer covers the outside of the organ

    -Parietal layer lines a portion of the wall of ventral body cavity
  7. serous diagrams
    heart and intestines
  8. synovial membranes
    -Connective tissue only 

    -Lines fibrous capsules surrounding joints

    -Secretes a lubricating fluid
  9. basic skin functions
    Image Upload 3
  10. stratum corneum
    -Outermost layer of epidermis 

    -Shingle-like dead cells are filled with keratin (protective protein prevents water loss from skin)
  11. stratum lucidium
    -Formed from dead cells of the deeper strata 

    -Occurs only in thick, hairless skin of the palms of hands and soles of feet
  12. stratum granulosum
    only where skin is hairless and thick.. ex palms 
  13. stratum spinousum
    with stratum granulosum is in the top layer
  14. melanin
    • produced by melanocytes ranges from color in light brown to black
    • found chiefly in the stratum basale
  15. dermal papillary layer
    the upper dermal region uneven and has peglike projections from its superior surface
  16. dermal papillae
     the peglike projections from the superior surface of the dermal papillary layer
  17. first degree burns
    only the epidermis is damaged area becomes red and swollen
  18. second degree burns 
    involve injury to the epidermis and the upper region of the dermis , skin is red and painful, blisters appear
  19. third degree burns
    destroy the entire thickness of the skin so these burns are also called full thickness burns the burned area appears blanched, gray white or blackened , the nerve endings in the area are destroyed therefore it is not painful - regeneration is not possible- skin grafting must be done 
  20. burns -rule of nines
    divides the body into 11 areas each accounting for 9% of the total body surface area plus an additional 1% for the genitals area 
  21. ABCD rule
    • A   Assymetry
    • B   Border irr egul   arity
    • C   Color
    • D   Diameter
Card Set
Anatomy Ch 4
chapter 4 wps anatomy and physiology