Question

multiple select question
select all that apply
mucous membranes line body structures open to the outside and
protect the body from bacterial invasion
protect the body from harmful fluids such as digestive juices
cushion organs from injury due to blunt force trauma
lubricate the walls of tube to protect the underlying tissue
separate internal cavities

Explanation:

Mucous membranes produce mucus which can trap bacteria, protecting against bacterial invasion. They also secrete substances to protect from harmful fluids like digestive juices and lubricate tube - walls to safeguard underlying tissue. Cushioning organs from blunt - force trauma is mainly done by connective tissues like adipose and fibrous connective tissues, and separating internal cavities is not a primary function of mucous membranes.

Answer:

A. protect the body from bacterial invasion
B. protect the body from harmful fluids such as digestive juices
D. lubricate the walls of tube to protect the underlying tissue