Topic 8: Membranes

Question 1

simplest organs

Answer 1

only 2 tissue types

o consist of epithelium attached to CT (with a basement membrane between them)

Question 2

List the membrane types

Answer 2

1) Mucous Membranes (mucosa)
2) Serous Membranes (serosa
3) Synovial Membranes
4) Cutaneous Membranes

Question 3

Mucous Membranes (mucosa)

Answer 3

— line cavities which open directly to the body exterior

— also called the mucosa of the… e.g. digestive, respiratory, urinary, reproductive systems

Question 4

Describe the 2 layers of tissue that compsose the mucosa

Answer 4

a) epithelial layer (avascular) varies from simple squamous to pseudostratified
b) CT (loose areolar – vascular), named the lamina propria, nourishes epithelial cells

Question 5

Serous Membranes (serosa)

Answer 5

— line closed cavities that DO NOT open to the exterior i.e. abdominal and chest cavities
— covers organs in these cavities
— also called serosa in the… (especially the peritoneal cavity
— double membranes - each composed of epithelial layers (often simple squamous) next to
serous cavity, & CTs (areolar):

Question 6

parietal layer

Answer 6

against cavity wall

Question 7

visceral layer

Answer 7

against organ

Question 8

Pleura

Answer 8

lung

¦ e.g. parietal & visceral pleura

Question 9

Peritoneum

Answer 9

abdominal organs

Question 10

Pericardium

Answer 10

heart

Question 11

Synovial Membranes

Answer 11

— in joints

— areolar CT, no epithelium (only ONE tissue type!)

Question 12

Cutaneous Membranes

Answer 12

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