urochord

• Substantiv, das ein primitives Meerestier mit sackförmigem, unsegmentiertem Körper bezeichnet, das durch eine Chorda gekennzeichnet ist, die im Larvenstadium sichtbar ist; oder speziell die Chorda der Schwanzlarve eines Manteltiers, meist auf den Schwanzbereich beschränkt.

A noun referring to a primitive marine animal with a saclike, unsegmented body, characterized by a urochord that is prominent in the larval stage, or specifically the notochord of a larval tunicate typically confined to the caudal region.

1. C2formalscientific

   A primitive marine animal with a saclike, unsegmented body and a prominent urochord visible in the larval stage.

   Primitives Meerestier

   • The urochord is a fascinating example of early chordate evolution.
   • Marine biologists study the urochord to understand the development of the backbone.
   • The larval urochord displays a distinct tail structure.

   Synonymetunicateurochordate

2. Larval notochordC2formalscientific

   The notochord of a larval tunicate, typically confined to the tail region.

   Larvenchorda

   • The urochord provides structural support in the larval tunicate.
   • During metamorphosis, the urochord is reabsorbed.
   • The presence of a urochord is a key characteristic of tunicate larvae.