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.
The Duggar family continues to grow as Josh and Anna announce they are expecting their fourth child. 1  19 Kids and Counting star Josh, 26, is the eldest of Jim Bob and Michelle's children. 2  Anna, also 26, gave birth to the couple's first child in October 2009.