Answer Happy

Each of the following statements concerning the alimentary canal mucosa is true, EXCEPT: may contain glands. lacks diffuse lymphatic tissue and lymphatic nodules. O is a barrier separating the tract lumen from the body. O selectively absorbs digested products. secretes digestive enzymes, hormones, mucus, and antibodies into the lumen.
LUMEN What kind of cells are shown here? O Langerhan cells fibroblasts neurons O macrophages O megakaryocytes