Endocardium
It's endocardium.
endocardium
Pericardium
Endocardium is the innermost layer of tissue that lines the chambers of the heart.
The serous membrane lines certain cavities in the body. It makes up the pleura, which lines the chest cavity, and the pericardium, which covers the heart.
The membrane that protects the heart is called the pericardium. It has two layers: - the visceral pericardium (the inner layer which touches the heart) - the parietal pericardium (the outer layer which touches other organs)
Synovial membrane.
Squamous. See Related Links.
The endosteum lines the medullary cavity.
Synovial membrane
The pleural membrane lines the chest cavity and lies over the
A thin, slippery, double membrane, which is called the pericardium, surrounds the heart and lines the chest wall. The inner membrane is the visceral pericardium which covers the surface of the heart, and the outer membrane is the parietal pericardium which lines the chest wall. Between the membranes is a small amount of lubricating fluid to reduce friction during the heart's movements.(note: previous answer mentioned sinovial fluid, which incorrect, as it is found in joints and not around the heart)Reference used for above info: Page 18; Principals of Anatomy and Physiology, 12th Ed.; TorTora and Derrickson; John Wiley and Sons, Inc.