a&p membranes

tissue membranes

line or cover body surfaces. have an epithelial layer with a layer of CT (mostly areolar) underneath

mucous membranes

line passageways that connect to the outside surface (digestive, respiratory, urinary, repro). keep epithelial surfaces moist with mucus either with glands or goblet cells, helping reduce friction and start absorption

lamina propria

the CT layer in mucosae, made of areolar tissue

serous membranes

line sealed internal areas of the ventral body cavity. thin, transparent, and strong; produces slippery fluid called transudate to minimize friction.

cutaneous membrane

the epidermis is stratified squamous; the dermis is areolar + dense irregular CT; skin is thick, somewhat waterproof, relatively dry

synovial membranes

line moving, articulating joint cavities and produce synovial fluid to lubricate them