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

Tongue

• Lingual papillae, of which there are 4 types:
  • Circumvallate papillae
  • Fungiform papilla
  • Filiform papilla
  • Foliate papillae

All lingual papillae contain taste buds except for filiform papillae.

Fish

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

Sea cucumber

• Papillae, conical fleshy protuberances on a sea cucumber.

Mushroom

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

See also

• Blister
• Papule