. Mucous membranes: lining of the digestive, respiratory, urinary and reproductive systems.
B. Serous membranes: line lungs, heart, abdominal cavity and covers the internal organs; named after their location.
i. Pleura: lungs.
ii. Peritoneum: abdominal cavity and organs.
iii. Pericardium: heart.
C. Synovial membranes: lines the cavities of freely movable joints.
D. Meanings: cover the brain and spinal cord