Overview of Body Membranes and Their Functions

What is the plasma membrane?

A dynamic, semi-permeable barrier that encloses individual cells.

What do mucous membranes (mucosae) line?

They line cavities open to the external environment, such as the respiratory, digestive, and urogenital tracts.

What is the function of mucous membranes?

They secrete mucus for lubrication and protection.

What do serous membranes (serosae) line?

They line closed body cavities, such as the thoracic and abdominal cavities, and cover organs.

What is the main function of serous membranes?

To reduce friction between organs.

Which membrane is known as the skin?

Cutaneous membrane.

What is the function of the cutaneous membrane?

It protects the body from external harm and helps regulate temperature.

Where are synovial membranes found?

In joint cavities.

What is the function of synovial membranes?

They secrete synovial fluid to lubricate and nourish cartilage.

Which layer of tissue membranes provides support and flexibility?

The connective tissue layer.

What can result from damage to mucous or serous membranes?

Increased pain and impaired organ function.

Which condition is caused by the deterioration of synovial membranes?

Arthritis.

How does damage to the cutaneous membrane affect the body?

It compromises defense against pathogens.