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

Keywords and Sections
ZYGOTE
BLASTULA
ANIMALS
CELLS
BLASTULA STAGE
DURING
EGG
DEVELOPMENT
LAYERS
STAGE
CAVITY
VEGETAL
CELL DIVISION
HOLLOW BALL
GASTRULA
FORMS
CALLED BLASTULA
MORULA
BLASTOMERES
LAYER
EMBRYO
FOLLOWS
FROG
BLASTOCOEL
FORM
AFTER FERTILIZATION
DEVELOPMENTAL
LAST CHECK
ONION
EARLY
WHITEFISH
PREVENTED
Review of Short Phrases and Links

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

Definitions

  1. The blastula is a hollow ball of cells organized into an epithelial monolayer.
  2. A blastula is an early embryo that has been formed by cleavage, or subdivision, of a fertilized egg. (Web site)
  3. The blastula is a hollow ball of cells that forms from the fertilization of an egg.
  4. The blastula is generally a ball of cells that are rapidly going under mitosis. (Web site)
  5. The blastula is an early stage of embryonic development in animals.

Zygote

  1. In animals, the development of the zygote into an embryo proceeds through specific recognizable stages of blastula, gastrula, and organogenesis. (Web site)
  2. During the next stage, cleavage, mitotic cell divisions transform the zygote into a tiny ball of cells called a blastula. (Web site)

Blastula

  1. Gastrulation of a diploblast: The formation of germ layers from a (1) blastula to a (2) gastrula. (Web site)
  2. Both are attached to the apices of the cells in the wall of the blastula, which extend microvilli into these extracellular matrix layers. (Web site)
  3. The outer layer ( ectoderm) corresponds to the surface of the blastula and the inner layer ( endoderm) is formed by cells that migrate into the interior.
  4. The blastocyst of humans (and most other mammals) contains an inner cell mass which is comparable to the blastula. (Web site)
  5. Triploblasty is a condition of the blastula in which there are three primary germ layers: the ectoderm, mesoderm, and endoderm. (Web site)

Animals

  1. During gastrulation cells migrate to the interior of the blastula, consequently forming two (in diploblastic animals) or three ( triploblastic) germ layers.
  2. At the beginning of vertebrate gastrulation, the embryo is a hollow ball of cells known as the blastula, with an animal pole and a vegetal pole.
  3. The animal pole gives rise to the concave side of the blastula and later to the blastopore of the gastrula, and hence the oral pole of the future polyp.
  4. Both the Medaka and the Sea Urchin go through the same process in the creation of the blastula.

Cells

  1. NiCl 2 treatment did not affect the number of cells lacking LvNotch expression in the center of the mesenchyme blastula vegetal plate. (Web site)
  2. Immunolocalization experiments detected no ECM 18 protein in eggs and early blastula. (Web site)
  3. The increased association of ECM 18 mRNA with polysomes from cleavage to mesenchyme blastula is approximately fivefold. (Web site)
  4. The outer layer ( ectoderm) corresponds to the surface of the blastula and the inner layer ( endoderm) is formed by cells that migrate into the interior. (Web site)

Blastula Stage

  1. During the late blastula stage a few cells on one side of the developing embryo begin to push into the blastocoel (8). (Web site)
  2. The blastula stage donor nucleus was removed from the embryo blastomere using a micropipet and then microinjected into the enucleated egg cytoplasm. (Web site)
  3. Lab Practical Study Guide Blastula --- sea urchin embryos in the blastula stage have an outer ring of cells and a hollow blastoceol. (Web site)

During

  1. The archenteron is known as the primitive gut that forms during gastrulation in the developing blastula. (Web site)
  2. During microlecithal gastrulation, a blastula with a relatively large blastocoel is usually formed. (Web site)
  3. During gastrulation cells migrate to the interior of the blastula, consequently forming two (in diploblastic animals) or three ( triploblastic) germ layers.
  4. The blastula is formed during the early stages of development. (Web site)

Egg

  1. The zona pellucida envelope disintegrates as the blastula develops. (Web site)
  2. Midway through the blastula stage, the embryo secretes hatching enzyme, which results in proteolytic degradation of the fertilization envelope. (Web site)
  3. A blastula is simply another form of the fertilized egg.
  4. The earliest events leading from the first division of the egg cell to the blastula stage in amphibians, reptiles and mammals are illustrated in Figure 5.4. (Web site)

Development

  1. The wall of the blastula is a mosaic of cellular areas, each of which will normally produce a certain structure during subsequent development. (Web site)
  2. More specifically, animals can be defined as heterotrophic eukaryotes without cell walls, which move through a blastula stage in early development[1].

Layers

  1. Instead of a blastula, a thin layer of cells forms on the surface of the yolk known as the blastoderm. (Web site)
  2. Development begins with undifferentiated cells of the blastula that become germ layers, then tissues, and finally organs. (Web site)
  3. Blastula. With time, the layer of cells on top of the yolk split, forming two layers separated by a cavity called the blastocoel. (Web site)
  4. The fourth cleavage is equatorial producing two layers of 8 cells and by the fifth cleavage, a single layered blastula with a central cavity is formed. (Web site)

Stage

  1. In sponges, blastula larvae swim to a new location and develop into a new sponge.
  2. A zygote initially develops into a hollow sphere, called a blastula, which undergoes rearrangement and differentiation.
  3. Blastula cells are not considered to have undergone differentiation. (Web site)
  4. Blastulation begins after the cleavage has produced 128 cells, in this stage the embryo is called a blastula.
  5. The blastula stage typically features a fluid-filled cavity, the blastocoel, surrounded by a sphere or sheet of cells, also called blastomeres. (Web site)

Cavity

  1. Last check: 2007-11-05) The blastula is a ball of cells enclosing a fluid-filled space. (Web site)
  2. The blastula is produced by mitosis of the zygote, and is a ball of cells surrounding a fluid-filled cavity (the blastocoel). (Web site)
  3. Gastrula: Further rearrangement of cells converts the blastula into a three-layered structure with a new cavity ( archenteron) and is called gastrula. (Web site)
  4. A blastula has around 128 cells, with a large central cavity called the blastocoel. (Web site)

Vegetal

  1. Right: A L. variegatus hatched blastula, showing the thickened vegetal plate and obvious blastocoel. (Web site)
  2. These studies have relied upon vegetal explants isolated from the late blastula embryo.
  3. NiCl 2 treatment did not affect the number of cells lacking LvNotch expression in the center of the mesenchyme blastula vegetal plate. (Web site)

Cell Division

  1. As cell division progresses, the blastula invaginates to form a gastrula.
  2. Blastula invagination cycles stop as cell divisions become asynchronous.

Hollow Ball

  1. The morula is a solid ball; after the 64-cell phase, it develops into a hollow ball, the blastula.
  2. After cleavage, the dividing cells, or morula, becomes a hollow ball, or blastula, which develops a hole or pore at one end. (Web site)
  3. AllRefer.com - mesoderm (Cell Biology) - Encyclopedia At the end of the blastula stage, cells of the embryo are arranged in the form of a hollow ball. (Web site)
  4. At the beginning of vertebrate gastrulation, the embryo is a hollow ball of cells known as the blastula, with an animal pole and a vegetal pole.
  5. The trophoblast, generally, are the cells which constitute the wall of the hollow ball at the blastula stage. (Web site)

Gastrula

  1. In animals, the development of the zygote into an embryo proceeds through specific recognizable stages of blastula, gastrula, and organogenesis.
  2. More accurately, the cleavages during the early blastula period are "metasynchronous" because the mitoses do not all occur at quite the same time. (Web site)
  3. The opening into the archenteron formed by the invagination of the blastula to form a gastrula. (Web site)
  4. By the late blastula period, EVL cell cycles are longer and less synchronous than deep cell cycles (Kane et al., 1992).
  5. Immunolocalization experiments detected no ECM 18 protein in eggs and early blastula. (Web site)

Forms

  1. When the blastula folds in on itself, it forms a double-walled structure, the gastrula, that has an opening to the outside called the blastopore. (Web site)
  2. The meroblastic pattern of cleavage forms a blastula in the shape of a disk. (Web site)
  3. A blastula or blastosphere is a spherical protective covering that forms over fetuses while in the zygotic stage. (Web site)

Called Blastula

  1. In animals, the blastula develops in one of two ways that divides the whole animal kingdom into two halves. (Web site)
  2. During the next stage, cleavage, mitotic cell divisions transform the zygote into a tiny ball of cells called a blastula. (Web site)
  3. A zygote initially develops into a hollow sphere, called a blastula, which undergoes rearrangement and differentiation.
  4. Blastulation begins after the cleavage has produced 128 cells, in this stage the embryo is called a blastula.

Morula

  1. Conversion of the morula to the blastula by development of a blastocele. (Web site)
  2. Review early embryology with the morula (little berry) an almost solid ball, the blastula, a hollow ball and gastrulation.

Blastomeres

  1. The blastula stage typically features a fluid-filled cavity, the blastocoel, surrounded by a sphere or sheet of cells, also called blastomeres.
  2. The different cells derived from cleavage (up to the blastula stage) are called blastomeres. (Web site)
  3. The marginal tier of blastomeres in the early blastula have a unique fate.
  4. The embryonic disc is also called the blastoderm, the blastodisc, the disc of blastomeres or, at later stages, the blastula. (Web site)

Layer

  1. Instead of a blastula, a thin layer of cells forms on the surface of the yolk known as the blastoderm. (Web site)
  2. The blastula had one layer of cells, the blastoderm (derma = skin): the gastrula two layers, the ectoderm ("outer skin") and entoderm ("inner skin").

Embryo

  1. These results show that a single maternally expressed gene controls the patterning of the Xenopus blastula.
  2. In most animals, embryos pass through a blastula stage, which is a characteristic exclusive to animals.
  3. Blastula --- Frog embryo that contains a blastoceol located in the animal hemisphere of the embryo. (Web site)
  4. TD {font-size:10pt} blastula - definition of blastula by the Free Online Dictionary, Thesaurus and Encyclopedia. (Web site)
  5. At the ( blastula, gastrula, larva, juvenile) stage does the individual begin to eat and grow. (Web site)

Follows

  1. It follows the blastula phase.
  2. The blastula follows the morula and precedes the gastrula in the development sequence.

Frog

  1. On the left is a sea urchin blastula, and on the right is a frog blastula. (Web site)
  2. Blastula --- Frog embryo that contains a blastoceol located in the animal hemisphere of the embryo. (Web site)
  3. A classic example of a species that forms a blastula is the common leopard frog of North America, Rana pipiens. (Web site)

Blastocoel

  1. A blastula has around 128 cells, with a large central cavity called the blastocoel.
  2. A blastula is formed in many animals with a fluid-filled central cavity called a blastocoel.
  3. Blastocoele A blastocoel(e) or blastocele or cleavage cavity or segmentation cavity is the central region of a blastula (or blastosphere).

Form

  1. In sponges, blastula larvae swim to a new location and develop into a new sponge.
  2. Blastula cells are not considered to have undergone differentiation. (Web site)
  3. The archenteron is known as the primitive gut that forms during gastrulation in the developing blastula. (Web site)
  4. The meroblastic pattern of cleavage forms a blastula in the shape of a disk. (Web site)
  5. More accurately, the cleavages during the early blastula period are "metasynchronous" because the mitoses do not all occur at quite the same time. (Web site)

After Fertilization

  1. After fertilization, a hollow ball develops, called the blastula.
  2. A zygote is formed after fertilization which develops by cell division into a blastula.
  3. Week 1-4 5-7 days after fertilization, the blastula attaches to the wall of the uterus ( endometrium).

Developmental

  1. The blastula follows the morula and precedes the gastrula in the developmental sequence.
  2. Animal Developmental Biology That is, found integrally a part of but nevertheless in one relatively small section of the blastula. (Web site)

Last Check

  1. Last check: 2007-11-05) The blastula is a ball of cells enclosing a fluid-filled space. (Web site)
  2. Last check: 2007-11-05) The whitefish blastula is formed directly after the egg is fertilized. (Web site)

Onion

  1. Explain why the whitefish blastula and onion root tip are selected for a study of mitosis. (Web site)
  2. Prepared slides of whitefish blastula and onion root tips were observed under the 10X and 40X objectives. (Web site)

Early

  1. The blastula is formed during the early stages of development.
  2. The early stage of a blastula in which the solid mass of blastomeres resembles a mulberry in appearance. (Web site)
  3. Precocious invaginations occurred as early as prehatched blastula stage ( Fig.
  4. At hatched blastula stage, LvRhoA was still ubiquitous and mostly localized to the apical membrane ( Fig.
  5. Provided are WISH images of 88 endomesoderm genes in blastula stage Strongylocentrotus purpuratus embryos (20 hours). (Web site)

Whitefish

  1. A whitefish blastula is often used to help study the processes of mitosis in animal cells.
  2. Prepared slides of whitefish blastula and onion root tips were observed under the 10X and 40X objectives. (Web site)
  3. Explain why the whitefish blastula and onion root tip are selected for a study of mitosis. (Web site)

Prevented

  1. The blastula is prevented from multiplying during the nuclear-injection stage.
  2. This aggregation is prevented by Fab fragments obtained by immunization with purified membranes from blastula embryos. (Web site)

Categories

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  Short phrases about "Blastula"
  Originally created: February 19, 2008.
  Links checked: July 07, 2013.
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