In embryogenesis,<unk>  is a depression in the roof of the developing mouth in front of the buccopharyngeal membrane. It gives rise to the anterior pituitary, a part of the endocrine system.
Rathke's pouch
Morison's pouch
Intestinal villus
Hertwig's epithelial root sheath
Pharyngeal pouch 
Mesenteric glands
Nodule of vermis
Junctional epithelium