Amphioxu in a sentence

The word "amphioxu" in a example sentences. Learn the definition of amphioxu and how to use it in a sentence.

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How to use amphioxu in a sentence. Amphioxu pronunciation.

The median congenital fissures of the neck are probably caused by defective union of the branchial arches, although Arndt thinks that he sees in these median fistulas a persistence of the hypobranchial furrow which exists normally in the amphioxus.
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Amphioxus lanceolatus), remarkable for the rudimentary condition of its organs.
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The lowest class of Vertebrata, including only the Amphioxus.
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I like to think that I was once a magnificent hairy fellow living in the trees, and that my frame has come down through geological time via sea jelly and worms and Amphioxus, Fish, Dinosaurs, and Apes.
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Especially in the lowest of all the vertebrates, the lancelet or Amphioxus, we have the oldest stem-forms completely preserved in the embryonic development.
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One of these animals is the lancelet (Amphioxus), the other the sea-squirt (Ascidia).
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The vertebrates comprise the already mentioned classes, from the Amphioxus to man (acrania, lampreys, fishes, dipneusts, amphibia, reptiles, birds, and mammals).
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One member of this group, the sea-squirt, very closely approaches the lowest vertebrate, the Amphioxus, in its essential internal structure and embryonic development.
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Recently eight to ten species of the amphioxus have been determined, distributed in two or three genera.
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The lancelet (Amphioxus lanceolatus), twice natural size, left view.
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Transverse section of the head of the Amphioxus.
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We may confidently lay down the following principle: The Amphioxus differs more from the fishes than the fishes do from man and the other vertebrates.
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As a matter of fact, it is so different from all the other vertebrates in its whole organisation that the laws of logical classification compel us to distinguish two divisions of this stem: 1, the Acrania (Amphioxus and its extinct relatives); and 2, the Craniota (man and the other vertebrates).
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Of these the only living representatives are the Amphioxus and Paramphioxus, though there must have been a number of different species at an early period of the earth's history.
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When we compare this embryonic condition, the sandal-shaped foetus, with the developed lancelet, we may say that the amphioxus is, in a certain sense, a permanent sandal-embryo, or a permanent embryonic form of the Acrania; it never rises above a low grade of development which we have long since passed.
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The real features of this and of its dependent formations are best seen in the transverse section of the Amphioxus (Figure 2.211).
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The water that enters the mouth of the Amphioxus passes through these clefts into the large surrounding branchial cavity or atrium, and then pours out behind through a hole in it, the respiratory pore (porus branchialis, Figure 2.210 c).
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The small particles that the Amphioxus takes in with the water-infusoria, diatoms, particles of decomposed plants and animals, etc.-pass from the gill-crate into the digestive part of the canal, and are used up as food.
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This is the liver of the Amphioxus, the simplest kind of liver that we meet in any vertebrate.
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All the other vertebrates have a compressed, thick, pouch-shaped heart, which develops from the wall of the gut at the throat, and from which the blood-vessels proceed; in the Amphioxus there is no special centralised heart, driving the blood by its pulsations.
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Examples of Amphioxu

Example #1
A few years since there was a man in Philadelphia past middle age, the victim of adult umbilical hernia so pendulous that while walking he had to support it with his arms and hands.
Example #2
They are less frequent than the preceding variety.
Example #3
It is the type of the class Leptocardia.
Example #4
A kind of spear anciently used.
Example #5
The heart is represented only by a simple pulsating vessel.
Example #6
The blood is colorless; the brain, renal organs, and limbs are wanting, and the backbone is represented only by a simple, unsegmented notochord.