Membranes and lymphoid tissue (dave's notes)

Question 1

Define: Mucous membrane

Answer 1

The lining of an internal body surface that communicates with the exterior

Question 2

What are the constituents of a mucous membrane?

Answer 2

Epithelium, connective tissue (lamina propria), smooth muscle (muscularis mucosa)

Question 3

Define: Serous membrane

Answer 3

The lining of a closed body cavity (pericardial, pleural, peritoneal) consisting of connective tissue covered by a single layer of flattened mesothelial cells.

Question 4

What lubricates the two layers serous membranes?

Answer 4

Lymph

Question 5

What is the nerve supply to the parietal layer of a serous membrane? What about the visceral layer?

Answer 5

Spinal nerves to the parietal layer. Visceral layer has no nerve supply

Question 6

List the organs of lymphoid tissue

Answer 6

Thymus, lymph nodes, tonsils, spleen - all of which have a connective tissue framework to support cellular elements.

Question 7

Where are isolated lymphoid follicles found?

Answer 7

In the mucosa and submucosa