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  Encyclopedia of Keywords > Gastrula > Blastopore   Michael Charnine

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    This Review contains major "Blastopore"- related terms, short phrases and links grouped together in the form of Encyclopedia article.


  1. A blastopore is an opening into the archenteron during the embryonic stages of an organism. (Web site)
  2. The blastopore is associated with the anus, and the second embryonic opening is associated with the mouth. (Web site)

Embryonic Development

  1. Arthropods are protostome animals, i.e., in their embryonic development the blastopore originates the mouth. (Web site)


  1. During gastrulation, the blastopore is the opening into the primitive gut. (Web site)
  2. In addition, blastopore closure, an earlier process that marks the completion of gastrulation, was observed. (Web site)

Germ Layers

  1. The axial side of the blastopore is marked by the organizer, a signaling center that patterns the germ layers and regulates gastrulation movements.


  1. In the sea urchin, the anterior end of the embryo is opposite the end of the blastopore). (Web site)

Neural Plate

  1. Hec-Cdx is expressed in a pair of cells in the anterior lip of the blastopore in the late gastrula which form the most posterior portion of the neural plate. (Web site)


  1. An opening, the blastopore, will form either the mouth or the anus, depending on the group. (Web site)
  2. This point on the embryo is termed the blastopore and will actually form the anus of the urchin. (Web site)


  1. The ectoderm gives rise to neural folds flanking a neural groove along an axis from the blastopore toward the future head. (Web site)
  2. Identification of neural inducers A transplanted blastopore lip can convert ectoderm into neural tissue and is said to have an inductive effect. (Web site)

Primitive Streak

  1. The indentation that is actually formed is called the lip of the blastopore in amphibians and fish, and the primitive streak in birds and mammals. (Web site)
  2. The indentation that is actually formed is called in amphibians and fish, the dorsal blastopore, and in birds and mammals it is called the primitive streak.


  1. Once inside the embryo, these cells move away from the blastopore and become organized into layers of endoderm and mesoderm, with endoderm on the inside. (Web site)
  2. At the onset of gastrulation presumptive mesodermal cells move through the dorsal blastopore lip and form a layer in between the endoderm and the ectoderm. (Web site)


  1. Gastrulation during frog development begins with a small crease on the blastula where the blastopore will eventually form. (Web site)
  2. Gastrulation is heralded by formation of a blastopore, an opening in the blastula.


  1. The new cavity thus formed is the gastrocoel, also known as the primitive gut or archenteron, and its opening is the blastopore.
  2. The blastopore (the external opening of the archenteron) forms the anus of the larva later in development. (Web site)
  3. Although there is no archenteron formed, the blastopore can be recognized as the site where cells ingress into the embryo (star in Fig.


  1. All other invertebrates are protostomes in which the blastopore (first opening in embryo) in their development becomes the mouth.
  2. In protostomes, the blastopore develops into the mouth, and the anus develops from an opening later in development.


  1. The next step in development is the formation of the gastrula by invagination, the folding in of the cells of the blastula at a point called the blastopore. (Web site)
  2. In many protostomes, the blastopore develops into the mouth, and a second opening at the opposite end of the gastrula develops into the anus. (Web site)


  1. The protostomes and deuterostomes differ from each other in in fate of the blastopore, the first opening to form during embryonic development. (Web site)
  2. Blastopore: Opening of the archenteron in the gastrula that develops into the mouth in protostomes. (Web site)
  3. During further development, the blastopore becomes the mouth in animals classified as protostomes; the blastopore becomes the anus in deuterostomes. (Web site)


  1. Gastrula
  2. Protostomes
  3. Archenteron
  4. Deuterostomes
  5. Nature > Life > Animals > Blastula
  6. Books about "Blastopore" in

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  Short phrases about "Blastopore"
  Originally created: July 27, 2008.
  Links checked: February 03, 2013.
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