simple organs: membranes

Question 1

membranes

Answer 1

• simplest organs
• only two tissue types
• epithelium attached to CT (with a basement membrane b/w them)

Question 2

membrane types

Answer 2

mucous membranes
serous membranes
synovial membranes

Question 3

mucous membranes (mucosa)

Answer 3

• line cavities which open directly to the body exterior
• 2 layers:
  a. epithelial layer (avascular) varies from simple squamous to pseudostratified
  b. CT (loose areolar-vascular), named the lamina propria, nourished epithelial cells)

Question 4

serous membranes (serosa)

Answer 4

-line close cavities that do not open to the exterioir like abdominal and chest cavities
-covers organs in these cavities
-double membranes- each composed of epithelial layers (often simple squamous) next to serous cavity and CTs (areolar):
a. parietal layer - against cavity wall
b. visceral layer - against (slippery)
-named for location:
pleura-lung (visceral and parietal pleura)
peritoneum-abdominal organs
pericardium-heart

Question 5

synovial membranes

Answer 5

• in joints

- areolar CT, no epithelium ( only one tissue type)

Question 6

cutaneous membranes

Answer 6

• skin
• epithelium=stratified squamous (named the epidermis)
• CT = areolar and dense irregular (named the dermis)