The document discusses the different types of epithelial and connective tissue membranes in the body. It covers cutaneous, mucous, serous, and synovial membranes. Cutaneous membranes form the skin and are composed of stratified squamous epithelium. Mucous membranes line body cavities and are moist. Serous membranes form double-layered membranes around organs in body cavities. Synovial membranes line joints.