Papillära

Papillära is a term used in anatomy and medicine to describe small, nipple-like projections or structures. The word is derived from papilla, meaning nipple, and is used across languages to indicate papillae or papillary features in various tissues.

In the skin and its layers, dermal papillae are upward projections of the dermis into the epidermis. They increase surface area, help anchor the epidermis, and contain capillaries that nourish the epidermal cells. The superficial dermal layer is called the papillary layer, characterized by loose connective tissue and a network of blood vessels and nerves.

In the urinary system, the renal papilla is the tip of a renal pyramid where urine drains from collecting ducts into the minor calyx. This papillary region concentrates urine before it passes into the urinary tract.

In tooth development, the dental papilla is a mesenchymal cell mass inside the tooth germ that differentiates to form dentin and the dental pulp, playing a key role in tooth formation.

In the oral cavity, gustatory papillae are the structures on the tongue that house taste buds. The main types are filiform, fungiform, circumvallate, and foliate papillae, each with distinct shapes and distributions that contribute to taste perception.

Papillary architecture can also appear in pathological contexts, such as papillomas or other papillary lesions, where projections of epithelium form frond-like or finger-like structures. The term papillära is thus a descriptive label used to identify nipple-like projections across different organs and tissues.