Papilla

The term papilla (plural: papillae) generally means a nipple-like structure, and may refer to:

• Mammary papilla, or nipple
• Amphibian papilla and basal papilla, part of the inner ear of the frog.
• Interdental papilla, part of the gingiva between teeth
• Dental papilla, cells involved in a developing tooth
• Renal papilla, in the kidney
• Lacrimal papilla, on the eyelid
• Major duodenal papilla, the opening of the pancreatic duct and common bile duct into the duodenum
• Minor duodenal papilla, the opening of the accessory pancreatic duct into the duodenum
• Dermal papillae, at the base of every hair follicle
• Papillary thyroid cancer, a type of disease
• Papilloma, a benign epithelial tumor
• Papillary muscle, a muscle in the heart
• Cuticular papilla, a raised thickening in plant cuticle, not large enough to be considered a trichome or hair

On the tongue

• Circumvallate papillae (contains taste buds)
• Fungiform papilla (contains taste buds)
• Filiform papilla (does not contain taste buds)
• Foliate papillae (contains taste buds)

On a fish

• Genital papilla, a small tube on fish anatomy, through which eggs or sperm are released
• Papilla (fish mouth structure), small lumps of dermal tissue found in the mouth which hold taste buds
• The sensory papillae of the Amblyopsidae (cavefishes)

On a sea cucumber

• Papillae, conical fleshy protuberances on a sea cucumber.

On a mushroom

• papilla (mycology), an acutely nipple-shaped protrusion in the center of the cap

See also

• Blister
• Papule