Tissue + Structures - Membranes

Question 1

What are the type of membranes?

Answer 1

1. Mucous.
2. Serous.

Question 2

What is a mucous membrane?

Answer 2

Lining of internal body surface that communicates with the exterior.

Question 3

What are the elements of mucous membranes?

Answer 3

1. Epithelium - varies depending on site and function.
2. Lamina propria - underlying connective tissue to epithelium.

Alimentary tract (GI) contain a third component:
3. Muscularis mucosae.

Question 4

What is the whole of the mucous membrane often called?

Answer 4

Mucosa.

Question 5

What is a serous membrane?

Answer 5

Serosa - lining of a closed body cavity.

Question 6

What is an example of a serous membrane?

Answer 6

1. Pericardial.
2. Pleural.
3. Peitroneal.

Question 7

What does serous membrane consist of?

Answer 7

1. Mesothelial cells - single flattened layer that is derived from mesoderm of coelomic cavity.
2. Connective tissue.

Question 8

How many layers are in serous membrane?

Answer 8

Two layers:
1. Visceral - lines the organ.
2. Parietal - lines the wall of the cavity.
These layers are continuous with each other.

Question 9

What happens with the two layers of serous membrane?

Answer 9

The layers are continuous with each other and they create a slit-like space and the membrane layers slide over each easily and are lubricated by lymph fluid.

Question 10

How tightly are each layers connected to the surrounding structures?

Answer 10

1. Visceral - connected very tightly to the viscera (organs).
2. Parietal - connected to the wall of the cavity by loose aerolar tissue (stripped away easily).

Question 11

What is the nerve supply of parietal serous membrane?

Answer 11

Somatopleure and supplied segmentally by spinal nerves.

Question 12

What is the nerve supply of visceral serous membrane?

Answer 12

Splanchnopleure and posses no sensory supply.