The endocardium is the innermost layer of tissue that lines the chambers of the heart. Its cells are embryologically and biologically similar to the endothelial cells that line blood vessels. The endocardium also provides protection to the valves and heart chambers.
In 2002, there were five sisters living in the Duggar house: Jana, then 12; Jill, 11; Jessa, 10; Jinger, 9; and Joy-Anna, 5. In March 2003, Jim Bob met with âchurch eldersâ to discuss Joshâs behavior, and they decided Josh needed to enter a treatment program.
Josh, 26, is the eldest of Jim Bob and Michelle Duggar's 19-strong brood and was the first of the children to start a family. Scroll down for video. 'We're expecting!' The couple shared their happy news on Twitter and in a video released by TLC. Four kids and counting: The couple already have three children.