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  Encyclopedia of Keywords > Nature > Life > Animals > Blastula > Gastrula   Michael Charnine

Keywords and Sections
GASTRULATION
BLASTULA
EARLY GASTRULA
GASTRULA STAGE
LAYERS
ZYGOTE
GASTRULA
MESENCHYME
MESODERM
XENOPUS
DIGESTIVE
OPENING
ORGANIZER
EMBRYONIC DEVELOPMENT
EMBRYO
LATE GASTRULA
OUTER
LARVA
MARGINAL ZONE
GASTRULA PHASE
LATE GASTRULA CONTRACT
GASTRULA STAGES
FIGURE
WAY
NEURAL
EMBRYONIC
DAUGHTER CELLS
NEURULATION
CENTRAL CAVITY
STAGE
PROCESS
FOLDING
FORM
DEUTEROSTOMES
THREE GERM LAYERS
NEURAL PLATE
THREE LAYERS
ECTODERM
MORULA
ENDODERM
ARCHENTERON
Review of Short Phrases and Links

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

Definitions

  1. The gastrula is a ball of cells that develops from the blastula.
  2. The gastrula is a ball of cells that develops from the blastula.
  3. The gastrula is an early embryonic stage in which the digestive tract begins development. (Web site)
  4. A real gastrula (a simple bell-gastrula) is formed from the blastula by invagination, in the same way as in the amphioxus.

Gastrulation

  1. The process is known as Gastrulation and the Embryo at this stage is known as Gastrula. (Web site)
  2. Gastrulation of a diploblast: The formation of germ layers from a (1) blastula to a (2) gastrula.
  3. This early embryonic form undergoes gastrulation, forming a gastrula with either two or three layers (the germ layers). (Web site)

Blastula

  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. Your diagrams should illustrate the 2,4, 8, 16 cell stage, blastula (hollow ball of cells), gastrula with archenteron (primitive gut), and pluteus larva.
  3. In animals, the development of the zygote into an embryo proceeds through specific recognizable stages of blastula, gastrula, and organogenesis.
  4. The blastula follows the morula and precedes the gastrula in the development sequence.
  5. The onset of differentiation ordinarily occurs with gastrula formation which follows the blastula stage. (Web site)

Early Gastrula

  1. In three clones, all consisting of embryos arresting at early gastrula stage, a few small ring chromosomes were present.
  2. Gastrula. The early gastrula stage may be distinguished from the blastula because of formation of the vegetal plate. (Web site)
  3. Take a drop of water from beakers labeled unfertilized eggs, fertilized eggs, cleavage, blastula, gastrula, and larval stages. (Web site)
  4. You should be able to distinguish the difference between the archenteron and the blastoceol of a frog embryo in the early gastrula stage. (Web site)
  5. The bar chart shows the normalized relative luciferase activity at gastrula stage, indicating that Vent2 represses the hhex promoter. (Web site)

Gastrula Stage

  1. Eventually, at the end of the gastrula period, the yolk cell becomes engulfed completely.
  2. FoxD3 induction of Brachyury at the gastrula stage and of Muscle Actin at the tailbud stage was completely blocked by SID ( Fig. (Web site)
  3. Embryos were treated for the times indicated (filled bars) then assessed for invagination at late gastrula stage.
  4. Typical gastrula stage embryos for each of three experimental conditions (non-injected, control morpholino and MO1 antisense injected) are shown.

Layers

  1. This early embryonic form undergoes a massive reorganization called gastrulation forming a gastrula with either two or three layers (the germ layers).
  2. Davidson BP, Tsang TE, KhooP-L, Gad JM, Tam PPL. Introduction of cell markers into germ layer tissues of the mouse gastrula by whole embryo electroporation. (Web site)
  3. The layers of cells in an animal embryo at the gastrula stage, from which are derived the various organs of the animal's body.
  4. Gastrula has the three germinal layers from which all tissues and organs are derived. (Web site)

Zygote

  1. In animals, the development of the zygote into an embryo proceeds through specific recognizable stages of blastula, gastrula, and organogenesis.
  2. The same trend can be found in embryogenesis---spherical zygote, radial gastrula, bilateral embryo and triaxial asymmetric child.

Gastrula

  1. Cells migrating inward along the archenteron form the inner layer of the gastrula, which develops into the endoderm. (Web site)

Mesenchyme

  1. As the gastrula forms, the remnants of the blastocoel shrink to eventually disappear completely.
  2. In embolic invagination, one half of the blastosphere is pushed in towards the other half, producing an embryonic form known as a gastrula.
  3. The filopodia --thin fibers formed by the mesenchyme cells--found in a late gastrula contract to drag the tip of the archeteron across the blastocoel.
  4. In late gastrula, SpMsx transcripts are visible throughout archenteron and in secondary mesenchyme cells at the tip of archenteron. (Web site)
  5. By the early gastrula stage, SpMsx transctipts are localized in the invaginating archenteron, but are not detectable in primary mesenchyme cells. (Web site)

Mesoderm

  1. Outpocketings of the archenteron (primitive gut) of the gastrula which form the mesoderm al somite s later in development.
  2. High-throughput functional screen of mouse gastrula cDNA libraries reveals new components of endoderm and mesoderm specification -- Chiao et al. (Web site)
  3. Indeed, Xenopus ectodermal explants injected with Xsox17 express Otx2 at gastrula stages, suggesting that Otx2 is downstream of Xsox17 ( Fig. (Web site)
  4. For example, most metazoans go through a developmental stage called a gastrula -- a ball of cells with an infolding that later forms the gut. (Web site)

Xenopus

  1. Vital dye mapping of the gastrula and neurula of Xenopus laevis. (Web site)
  2. Kwan KM, Kirschner MW : Xbra functions as a switch between cell migration and convergent extension in the Xenopus gastrula.

Digestive

  1. It first invaginates to form a gastrula with a digestive chamber, and two separate germ layers - an external ectoderm and an internal endoderm.
  2. The central cavity of the gastrula, which ultimately becomes the intestinal or digestive cavity. (Web site)

Opening

  1. The opening into the gastrula is known as the blastopore.
  2. The opening of the gastrula that develops into the mouth in protostomes and the anus in deuterostomes.
  3. Last check: ) When the eggs develop into a so-called gastrula you can see the anus being formed from the opening. (Web site)

Organizer

  1. The anterior endomesoderm of the early Xenopus gastrula is a part of Spemann's organizer and is important for head induction.
  2. In the Xenopus gastrula, FoxD3 is co-expressed with Xnr1, Xnr2 and Xnr4 in the organizer domain. (Web site)
  3. Figure 3. Proteins secreted by dorsal (Spemann organizer) or ventral gastrula signaling centers. (Web site)
  4. In the amphioxus gastrula there is a striking co-expression of FoxD and Nodal in the dorsal mesendoderm (Yu et al., 2002a , 2002b ). (Web site)

Embryonic Development

  1. Gastrula The gastrula phase of embryonic development, which follows after the blastula stage, is seen in all animals except the sponges.
  2. Archenteron The central cavity of the gastrula stage of embryonic development that is lined with endoderm; primitive digestive system.
  3. The gastrula phase of embryonic development is seen in all animals except the sponges. (Web site)
  4. Early developmental staging from the zygote stage to the gastrula is a basic step for studying embryonic development and biotechnology. (Web site)

Embryo

  1. This stage follows the zygote and blastocyst stages; the gastrula forms when the embryo is approximately 14-16 days old in humans. (Web site)
  2. Characteristics of eumetazoans include true tissues organized into germ layers, and an embryo that goes through a gastrula stage. (Web site)
  3. Gastrula: Early embryo with 3 tissue layers.
  4. The gastrula phase of embryo nic development is seen in all animals except the sponges. (Web site)
  5. When this process ( gastrulation) becomes visible as an indentation, the developing embryo is termed a gastrula (9). (Web site)

Late Gastrula

  1. A L. variegatus late gastrula, viewed from the ventral (oral) side.
  2. Figure 4. Left: L. variegatus early gastrula, viewed from the side. (Web site)
  3. At late gastrula all of these embryos had higher levels of apical LvNotch along the dorsal side of the presumptive endoderm. (Web site)
  4. Stages are: HB, hatched blastula; MB, mesenchyme blastula; EG, early gastrula; LG, late gastrula; PR, prism.

Outer

  1. The cells who remain on the outer surface of the gastrula become the epiblast (ectoderm). (Web site)
  2. B–E Metamorphosis: B, Haeckel's (i) morula, (ii) planula, (iii) gastrula, and (v) ascula (juvenile) with a syncytial outer layer. (Web site)

Larva

  1. The cells continue to be rearranged until the shallow dip formed by invagination transforms into a deeper, narrower pouch formed by the gastrula 's endoderm. (Web site)
  2. At the ( blastula, gastrula, larva, juvenile) stage does the individual begin to eat and grow. (Web site)
  3. At this time the gastrula transforms itself into a free swimming (via cilia bands) (18) and feeding larva (15). (Web site)

Marginal Zone

  1. Later This is the early starfish gastrula. (Web site)
  2. We show that Wee1 contributes to the regulation of Cdc2 tyrosine phosphorylation and M-phase entry in early gastrula embryos. (Web site)
  3. Lab Practical Study Guide Early gastrula --- The early gastrula is beginning to form the archenteron at the marginal zone of the embryo. (Web site)

Gastrula Phase

  1. The gastrula phase is marked by a dramatic restructuring called gastrulation. (Web site)
  2. The gastrula phase is marked by a dramatic restructuring called gastrulation.
  3. The gastrula phase is marked by a dramatic restructuring called gastrula tion. (Web site)
  4. During gastrulation Gastrulation is a dramatic restructuring of the animal embryo during the gastrula phase.

Late Gastrula Contract

  1. The filopodia --thin fibers formed by the mesenchyme cells--found in a late gastrula contract to drag the tip of the archenteron across the blastocoel. (Web site)

Gastrula Stages

  1. Very faint broad expression was detected from the blastula through gastrula stages.

Figure

  1. Figure 4. Left: L. variegatus early gastrula, viewed from the side. (Web site)
  2. Figure 5. Left: L. variegatus late gastrula processed for scanning electron microscopy. (Web site)

Way

  1. Vertebrate animals all differentiate from the gastrula the same way. (Web site)

Neural

  1. During the first stage, at pre-gastrula and gastrula stages, ectoderm segregates into two distinct domains, neural and non-neural (i.e., epidermis).

Embryonic

  1. Embryonic and larval development of the loach was divided into five periods: cleavage, blastula, gastrula, segmentation, and hatching. (Web site)

Daughter Cells

  1. Scientific Article (Gastrula) First Cell Divisions: As a fertilized egg goes through its first divisions, the daughter cells become progressively smaller. (Web site)

Neurulation

  1. Neurulation occurs at or near the end of gastrulation and transforms the gastrula into a neurula by establishing the central nervous system. (Web site)

Central Cavity

  1. The central cavity of the gastrula, which ultimately becomes the intestinal or digestive cavity. (Web site)

Stage

  1. In this way the embryonic disk becomes three layered, and the gastrula stage of development comes to an end.
  2. More generally, and originally, the term gastrulation referred to the process by which the gastrula stage of the embryo is formed. (Web site)

Process

  1. This is the gastrula (stomach) stage, and the process of its formation is called gastrulation.
  2. The blastula turns into gastrula in a process known as gastrulation. (Web site)
  3. The process of forming a gastrula. (Web site)

Folding

  1. Gastrulation is the tucking and folding of the blastula to make a three-layer structure called a gastrula.

Form

  1. To infold or become infolded so as to form a hollow space within a previously solid structure, as in the formation of a gastrula from a blastula.
  2. It first invaginates to form a gastrula with a digestive chamber, and two separate germ layers - an external ectoderm and an internal endoderm.
  3. As cell division progresses, the blastula invaginates to form a gastrula.

Deuterostomes

  1. In vertebrates and other deuterostomes, the opening of the gastrula becomes the anus, while in protostomes (such as arthropods), it becomes the mouth. (Web site)
  2. In deuterostomes, the mesoderm forms when there is division of the cells at the top of the gastrula.

Three Germ Layers

  1. At the gastrula stage, students should make a new model that now contains three colors of clay (to represent the three germ layers).

Neural Plate

  1. The two lateral ends of the neural plate then fold up to meet at the midline of the gastrula to form the neural tube.
  2. 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)

Three Layers

  1. These three layers are formed as the blastula turns into the gastrula.

Ectoderm

  1. The blastula had one layer of cells, the blastoderm (derma = skin): the gastrula two layers, the ectoderm ("outer skin") and entoderm ("inner skin").
  2. From the established ectoderm layer of the gastrula, neural tissue is derived by a series of tissue inductions, movements, and differentiations.

Morula

  1. The blastula follows the morula and precedes the gastrula in the developmental sequence. (Web site)
  2. Blastula The blastula stage of embryonic development in animals follows the morula and precedes the gastrula stage in the developmental sequence.

Endoderm

  1. The cells continue to be rearranged until the shallow dip formed by invagination transforms into a deeper, narrower pouch formed by the gastrula 's endoderm.
  2. The inner layer of the gastrula becomes the endoderm, or the digestive tract.
  3. Mesenchyme tissue can come from all three of the germ layers (ectoderm, mesoderm, and endoderm) in the developing embryo, shown here at the gastrula stage. (Web site)

Archenteron

  1. Blastopore: Opening of the archenteron in the gastrula that develops into the mouth in protostomes. (Web site)
  2. Outpocketings of the archenteron (primitive gut) of the gastrula which form the mesoderm al somite s later in development.
  3. Cells migrating inward along the archenteron from the inner layer of the gastrula, which develops into the endoderm. (Web site)

Categories

  1. Nature > Life > Animals > Blastula
  2. Nature > Life > Animals > Gastrulation
  3. Archenteron
  4. Germ Layers
  5. Glossaries > Glossary of Developmental Biology /
  6. Books about "Gastrula" in Amazon.com

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  Short phrases about "Gastrula"
  Originally created: February 19, 2008.
  Links checked: June 21, 2013.
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