Definitions for endostyle
en·dostyle

WikipediaRate this definition:0.0 / 0 votes

1. Endostyle

   The endostyle is an anatomical feature found in invertebrate chordates and larval lampreys. It is an organ which assists chordates in filter-feeding. It is found in adult urochordates and cephalochordates, as well as in the larvae of the vertebrate lampreys, but has been transformed through evolutionary time into the thyroid in all other vertebrates. Since the endostyle is found in all three branches of chordates, it is presumed to have arisen in the common ancestor of these taxa, along with a shift to internal feeding for extracting suspended food from the water.The endostyle is found in the pharynx. The food particles suspended in the water adhere to the mucus it produces. The filtered water is expelled through the gill slits, while the food and mucus is then passed, by the sweeping movement of cilia that coats the endostyle, through the pharynx of the organism and into the esophagus.The endostyle in larval lampreys (ammocoetes) metamorphoses into the thyroid gland in adults, and is regarded as being homologous to the thyroid gland in vertebrates due to its iodine-concentrating activity.Early beliefs of the endostyle included the idea by Muller in 1873 stating that the endostyle that reside in the ammocoete has extremely similar functions as the protochordate hypobranchial groove. Thus, numerous investigations into the endostyle ensued, only for the theory to be denied by future researchers. However, during this research, it was found that ammocoete endostyles include the capability and functionality to accumulate radioactive iodine isotopes. This once again made the endostyle a very pertinent topic of research by a multitude of scientists. Recent research has concluded that cephalochordate and tunicate endostyles have the ability to capture iodine, thus further perpetuating new research.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Endostylenoun

   a fold of the endoderm, which projects into the blood cavity of ascidians. See Tunicata

2. Etymology: [Endo- + Gr. a pillar.]

WikidataRate this definition:0.0 / 0 votes

1. Endostyle

   An endostyle is a longitudinal ciliated groove on the ventral wall of the pharynx which produces mucus to gather food particles. It is found in urochordates and cephalochordates, and in the larvae of lampreys. It aids in transporting food to the esophagus. It is also called the hypopharyngeal groove. The endostyle in larval lampreys metamorphoses into the thyroid gland in adults, and is regarded as being homologous to the thyroid gland in vertebrates. However, Dumont, et al. have questioned whether the endostyle in ammocetes is homologous with that of the urochordates and cephalochordates. It is generally considered as a synapomorphy of chordates. Since the endostyle is found in the three branches of chordates, it is presumed to have arisen in the common ancestor of these taxa, along with a shift to internal feeding for extracting suspended food from the water.

How to pronounce endostyle?

1. Alex

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   David

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   Mark

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   Daniel

   British

   Libby

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   Mia

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   Karen

   Australian

   Hayley

   Australian

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   Oliver

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How to say endostyle in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of endostyle in Chaldean Numerology is: 1

2. Pythagorean Numerology

   The numerical value of endostyle in Pythagorean Numerology is: 2

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Endostyle
2. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/endostyle
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=endostyle