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.
Each of the following statements concerning the basement membrane is true, EXCEPT: takes part in nutrition of epithelium. contains type IV collagen and laminin. separates epithelium from the underlying connective tissue. is absent in some epithelia. serves for epithelial cell attachment.