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Classification of Body Membranes
Transcript of Classification of Body Membranes
includes cutaneous, mucous, and serous Epithelial Membranes The cutaneous membrane is your skin.
composed of stratified squamous
composed of mostly dense fibrous tissue
exposed to air and is a dry membrane
function is protection and maintaining boundaries Composed of epithelium resting on loose connective tissue
normally simple columnar, stratified squamous
lines all body cavities that are exposed to the exterior, such as respiratory, digestive, urinary, and reproductive
is a wet membrane
functions are absorption and secretion Mucous Membranes Cutaneous Membrane composed of simple squamous on a thin layer of areolar tissue
lines body cavities that are closed to the exterior
occurs in pairs (parietal and visceral)
parietal layer lines specific portions of the ventral body cavity
fold on themselves to form visceral layer which covers the outside of the organs
serous layers are not separated by air but by serous fluid which is secreted by both layers
allows organs to slide easily across body cavity walls and one another without friction
naming of the serous membranes depends upon location
the peritoneum is around the abdominal cavity, the pleura is around the lungs, and the pericardium is around the around the heart Serous Membranes the synovial membranes are composed of connective tissue and contain no epithelial
line the fibrous capsules surrounding joins
provide a smooth surface and secrete and lubricating fluid
also line small sacs of connective tissue like tendons and bursae
cushion organs during movement across bones Connective Tissue Membranes There are 2 major categories
Epithelial and connective
the 4 membranes we talked about were cutaneous, mucous, and serous, and synovial membranes Conclusion