Question

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

Explanation:

Mucous membranes secrete mucus which lubricates tube - like structures to protect underlying tissue. They also act as a barrier against bacterial invasion.

Answer:

• lubricate the walls of tube to protect the underlying tissue
• protect the body from bacterial invasion