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Mouth second
- Recall that protostome and deuterostomes differ in certain aspects of their embryonic development, and they are named based on which opening of the digestive cavity develops first. The word deuterostome comes from the Greek word meaning “mouth second,” indicating that the anus is the first to develop.
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Where does the word Deuterostomia come from?
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Deuterostomes (from Greek: lit. 'mouth second') are bilaterian animals of the superphylum Deuterostomia ( / ˌdjuːtərəˈstoʊmi.ə / ), [3] [4] typically characterized by their anus forming before the mouth during embryonic development.
The meaning of DEUTEROSTOME is any of a major division (Deuterostomia) of the animal kingdom that includes the bilaterally symmetrical animals (such as the chordates) with indeterminate cleavage and a mouth that does not arise from the blastopore.
Apr 27, 2017 · It is useful to note that the two names are derived from the Greek proto-“first” and deutero-“second”, and stoma meaning “mouth”. The deuterostomes develop a “second-mouth”.
The word deuterostome comes from the Greek word meaning “mouth second,” indicating that the anus is the first to develop. There are a series of other developmental characteristics that differ between protostomes and deuterostomes, including the mode of formation of the coelom and the early cell division of the embryo.
The word deuterostome comes from the Greek word meaning “mouth second,” indicating that the mouth develops as a secondary structure opposite the location of the blastopore, which becomes the anus. In protostomes (“mouth first”), the first embryonic opening becomes the mouth, and the second opening becomes the anus.
The word deuterostome comes from the Greek word meaning “mouth second,” indicating that the anus is the first to develop. 34.2: Chordates The phyla Echinodermata and Chordata (the phylum in which humans are placed) both belong to the superphylum Deuterostomia.
The word deuterostome comes from the Greek word meaning “mouth second,” indicating that the mouth develops as a secondary structure opposite the location of the blastopore, which becomes the anus.
