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OLFACTORY SAC [1 record]

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Record 1 1977-10-27

English

Subject field(s)
  • The Mouth
OBS

The olfactory organ begins as an ectodermal placode, median and faintly paired in cyclostomes, lateral and paired in gnathostomes; this invaginates, forming the olfactory sac.

French

Domaine(s)
  • Cavité buccale
OBS

Chez les Téléostéens et les Amphibiens à stomodaeum rudimentaire, les placodes olfactives sont situées sur les parois latérales de la région antérieure de la tête [et] ces placodes s'invaginent [chacune] en [un] "sac olfactif" ouvert au niveau des "narines externes". Chez les Tétrapodes ces sacs olfactifs s'appliquent contre le plafond buccal et s'ouvrent secondairement dans la cavité buccale au niveau de "narines internes"

Spanish

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