Papilla

Papilla (Latin, 'nipple') or papillae may refer to:

• Papilla (fish anatomy), in the mouth of fish
• Papilla (worms), small bumps on the surface of certain worms
• Basilar papilla, a sensory organ of lizards, amphibians and fish
• Dental papilla, in a developing tooth
• Dermal papillae, part of the skin structure
• Major duodenal papilla, in the duodenum
• Minor duodenal papilla, in the duodenum
• Genital papilla, a feature of the external genitalia of some animals
• Mammary papilla or nipple, a raised region of tissue on the surface of the breast
• Interdental papilla, part of the gums
• Lacrimal papilla, on the bottom eyelid
• Lingual papillae, small structures on the upper surface of the tongue
• Renal papilla, part of the kidney
• Tumor papilla, consisting of tumor cells surrounding a fibrovascular core

• Papilla (mycology), a nipple-shaped protrusion in the center of the cap
• Stigmatic papilla, part of the stigma (botany)

• Blister, a small pocket of body fluid within the upper layers of the skin
• Papillary muscle, a muscle in the heart
• Papilloma, a benign epithelial tumor
• Papule, a circumscribed, solid elevation of skin with no visible fluid