- Ordbognounzoologysiphuncle (navneord) · siphuncles (navneord i flertal)
- (in shelled cephalopods such as nautiloids and ammonoids) a calcareous tube containing living tissue running through all the shell chambers, serving to pump fluid out of vacant chambers in order to adjust buoyancy.
Originmid 18th century: from Latin siphunculus ‘small tube’. - Se mere
Se alle på WikipediaThe siphuncle is a strand of tissue passing longitudinally through the shell of a cephalopod mollusk. Only cephalopods with chambered shells have siphuncles, such as the extinct ammonites and belemnites, and the living nautiluses, cuttlefish, and Spirula. In the case of the cuttlefish, the siphuncle is indistinct and … Se mere
The siphuncle of fossilised cephalopods is assumed to have worked in the same general way as in living nautiluses. The siphuncle itself is … Se mere
Wikipedia-tekst under CC-BY-SA-licens Siphuncle Controls Buoyancy — Biological Strategy — …
WEBden 14. okt. 2016 · Reaching through the interior of the shell is a tubular structure called the siphuncle. The nautilus uses this organ to control …
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Siphuncle | invertebrate anatomy | Britannica
WEBIn the cephalopods Nautilus and Spirula, the planospirally coiled shell consists of multiple chambers connected by a porous tube called the siphuncle. The chambers contain …
WEBden 13. apr. 2021 · The chambers remain connected, however, by the siphuncle, an organ capable of adjusting chamber liquid through osmosis 20,21.
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WEBden 1. jan. 2015 · The siphuncle is a long and narrow segmented soft tissue that occurs in four extant cephalopods with a phragmocone. It contains blood vessels, connective …
Chambered Nautilus - The Australian Museum
WEBThis strongly coiled, pearly shell is divided into more than 30 chambers that are connected via a tube containing living tissue known as a siphuncle. The siphuncle is responsible …
WEBden 8. maj 2018 · siphuncle A long tube present in those cephalopods ( Cephalopoda) that possess external shells. It runs internally, through all the chambers, and contains the …
WEBden 10. mar. 2016 · A thin organic strand, called the siphuncle, runs through all phragmocone chambers and connects this with the rear of the soft body that sits in the …
Cephalopoda | SpringerLink
WEBDevelopment of this siphuncle forms the point of evolutionary divergence of the Cephalopoda, probably from a high-spired septate monoplacophoran (Yochelson et al., …
The Evolution and Development of Cephalopod Chambers and …
WEBden 10. mar. 2016 · A thin organic strand, called the siphuncle, runs through all phragmocone chambers and connects this with the rear of the soft body that sits in the …
