The trachea connects the larynx and bronchi. It is lined with a mucus membrane with respiratory epithelium and a lamina propria, and a submucosa containing horseshoe shape hyaline cartilages and numerous mucus and mixed glands (Trachea 1).
Arrowroot starch and tapioca flour are two products that are used quite a bit in gluten-free cooking and baking. They are used to replace corn starch and wheat flour in various recipes. Arrowroot starch can sometimes substitute for tapioca flour depending on the application.
What They Are. Arrowroot starch is made from the dried rootstock of the arrowroot plant, which is then ground into a white powder. The name comes from the manner in which it was used by the South American Aruac Indians, who saw it as an antidote for poisonous arrows.