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  Encyclopedia of Keywords > Nature > Life > Animals > Embryo > Blastocyst   Michael Charnine

Keywords and Sections
IMPLANTATION
EMBRYO
FERTILIZATION
BLASTOCYSTIS
TROPHECTODERM
BLASTOCYST TRANSFER
PREIMPLANTATION EMBRYO
ENZYME
BABY
BALL
MASS
RAPIDLY
STRUCTURE
SECOND WEEK
STAGE
LINING
GROUP
SMALL GROUP
OUTERMOST
CLUSTER
FIRST WEEK
WALL
PREGNANCY
MENSTRUAL CYCLE
CELL DIVISION
FIVE DAYS
PINHEAD
STEM CELLS
UTERINE LINING
ICM
ZONA PELLUCIDA
EPIBLAST
EMBRYOBLAST
EMBRYONIC STEM CELLS
FERTILIZED EGG
ENDOMETRIUM
INNER CELL MASS
DAYS
FIRST
CONCEPTION
FORMATION
FORM
OUTER
CAVITY
BLASTOCOEL
EMBRYOGENESIS
Review of Short Phrases and Links

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

Definitions

  1. A blastocyst is a stage of development of an embryo when it is around five days old and made up of about 100 cells.
  2. A blastocyst is a type of embryo that has been incubated for at least five days and has differentiated into two different cell types. (Web site)
  3. A blastocyst is a microscopic group of cells - smaller than Roosevelt's eye on the face of a U.S. dime.
  4. A blastocyst is about the size of a pinhead, and it's a hollow ball of cells with fluid inside. (Web site)
  5. Blastocyst is a fluid-filled bag-like structure.

Implantation

  1. It functions in the implantation of the blastocyst in the uterine wall and in supplying nutrients to the embryo.
  2. As soon as blastocyst gets to the uterus, it will embed itself into the endometrium (uterine lining), a process called implantation.
  3. Implantation begins with the attachment of the blastocyst to the endometrium and continues as the blastocyst invades the uterine wall. (Web site)

Embryo

  1. The outer layer of cells, called the trophoblast, and the inner mass of cells, called the blastocyst, will together go on to form the embryo. (Web site)
  2. A small group of cells attached to the wall of the blastocyst (the embryo at a very early stage of development that looks like a hollow ball).
  3. Blastocyst - The embryo at the time of implantation into the inner wall of the uterus.

Fertilization

  1. The cell divisions called cleavage produce a hollow ball of cells called a blastocyst about one week after fertilization.
  2. Following fertilization, the zona pellucida also surrounds the blastocyst during the first week of development, from which it "hatches".
  3. Blastocyst -- An embryo that has developed for five days after fertilization.

Blastocystis

  1. Blastocyst - Se also: Blastocystis, a single-celled parasite.

Trophectoderm

  1. TROPHECTODERM The outer cell layer of a blastocyst, made up of a mural and polar component.

Blastocyst Transfer

  1. BLASTOCYST TRANSFER - Replacing blastocyst s into the uterus.

Preimplantation Embryo

  1. Human blastocyst A preimplantation embryo. (Web site)

Enzyme

  1. The cells on the exterior of the blastocyst begin excreting an enzyme which erodes epithelial uterine lining and creates a site for implantation. (Web site)

Baby

  1. Your baby is called a blastocyst as it implants. (Web site)

Ball

  1. The blastocyst can be thought of as a ball of a (mostly single) layer of trophoblast cells, with inner cell mass attached to this ball's inner wall. (Web site)

Mass

  1. A blastocyst contains a single layer of outer cells, a fluid-filled cavity and a mass of inner cells. (Web site)

Rapidly

  1. The blastocyst continually and rapidly divides into more and more cells on the way to becoming an embryo.
  2. The inner cell mass of the blastocyst divides rapidly, forming two layers. (Web site)

Structure

  1. Mammals at this stage form a structure called the blastocyst,[4] characterized by an inner cell mass that is distinct from the surrounding blastula. (Web site)
  2. This new structure with a cavity in the center and the developing cells around it is known as a blastocyst.

Second Week

  1. As the blastocyst completes implantation during the second week, the inner cell mass undergoes marked differentiation. (Web site)

Stage

  1. At 3 weeks pregnant, your baby is in the blastocyst stage.
  2. It is primarily found in the blastocyst stage of early embryological development, and its purpose is to collect liquid waste from the embryo.
  3. The inner cell mass has little visible organization in the early blastocyst stage. (Web site)

Lining

  1. The blastocyst causes the irritation that alters the lining of the uterus in such a way as to allow implantation.

Group

  1. Endoderm Lower layer of a group of cells derived from the inner cell mass of the blastocyst; it gives rise to lungs and digestive organs. (Web site)

Small Group

  1. Inner Cell Mass: A small group of cells that are attached inside the blastocyst. (Web site)

Outermost

  1. Ectoderm Upper, outermost layer of a group of cells derived from the inner cell mass of the blastocyst; it gives rise to skin nerves and brain. (Web site)

Cluster

  1. Inner Cell Mass: The cluster of cells found inside the blastocyst that gives rise to all the cells of the body in the developing human organism.

First Week

  1. During the first week, the embryo becomes a solid mass of cells and then acquires a cavity, at which time it is known as a blastocyst." (p. (Web site)

Wall

  1. The free endodermal tip grows toward the wall of the blastocyst, surrounded by a mass of mesodermal cells. (Web site)

Pregnancy

  1. The onset of pregnancy, marked by implantation of the blastocyst into the endometrium.

Menstrual Cycle

  1. This first page will give a brief overview of: menstrual cycle, fertilization, blastocyst and implantation.

Cell Division

  1. Blastocyst: A preimplantation embryo of about 150 cells produced by cell division following fertilization. (Web site)

Five Days

  1. Blastocyst A stage of embryo development about five days after fertilization.
  2. Allowing in vitro embryo s to reach blastocyst stage (typically five days after fertilization) before transferring them into the uterus.

Pinhead

  1. Although it is only the size of a pinhead, the blastocyst is composed of hundreds of cells.

Stem Cells

  1. Once the inner cell mass is removed from the blastocyst, the stem cells are placed in a culture dish where they grow and replicate over time.
  2. At day five when stem cells can be harvested, a blastocyst is approximately 0.1 to 0.2 millimeters (0.0039 to 0.0079 inches) in size.

Uterine Lining

  1. The action of the enzyme erodes a gap and depression in the uterine epithelium that enables the blastocyst to penetrate the uterine lining. (Web site)

Icm

  1. Human embryonic stem cell (hESC) -A type of pluripotent stem cell derived from the inner cell mass (ICM) of the blastocyst.
  2. Inner cell mass (ICM) -The cluster of cells inside the blastocyst.

Zona Pellucida

  1. Filled with uterine fluid, the blastocyst breaks out of the zona pellucida and undergoes implantation. (Web site)
  2. As uterine fluid penetrates its outer layer (the zona pellucida), a blastocyst with a cavity is formed.

Epiblast

  1. The blastocyst consists of two primary cell lines: the inner cell mass, also known as the epiblast, and the trophoblast. (Web site)

Embryoblast

  1. Inside the blastocyst is an inner cell mass or embryoblast (future embryo), and the outer cell mass or trophoectoderm (future placenta).
  2. The blastocyst contains an embryoblast, which is homologous to the blastula.

Embryonic Stem Cells

  1. Cells taken from the inner cell mass of the blastocyst (a very early stage embryo) can become embryonic stem cells. (Web site)
  2. The embryonic stem cells are derived from the blastocyst (before it becomes a fetus) and can be instructed to form particular cell types (e.g.
  3. Embryonic stem cells: Stem cells that are harvested from a blastocyst. (Web site)

Fertilized Egg

  1. During this third week of pregnancy, the fertilized egg divides into hundreds of cells and is now called a blastocyst.
  2. When the fertilized egg has developed for four to five days (the blastocyst stage), the stem cells are retrieved. (Web site)

Endometrium

  1. The trophoblast, the outer epithelium of the blastocyst, secretes enzymes that break down the endometrium to facilitate implantation of the blastocyst. (Web site)
  2. The blastocyst becomes oriented with the inner cell mass toward the endometrium. (Web site)
  3. When the repairs are completed, the blastocyst loses contact with the uterine cavity and becomes completely embedded within the endometrium. (Web site)

Inner Cell Mass

  1. The blastocyst has an outer layer of cells and inside the hollow sphere, there is a cluster of cells called the inner cell mass. (Web site)
  2. The blastocyst consists of cells forming an outer trophoblast layer, an inner cell mass (embryoblast) and a fluid-filled cavity.
  3. Pluripotency is a property of the inner cell mass (ICM), from which mouse ES cells are derived, and of the epiblast of the blastocyst.

Days

  1. About eight days after fertilization, the blastocyst implants itself in the endometrium of the uterus.
  2. A fertilized egg reaches the blastocyst stage usually 4 to 5 days after fertilization. (Web site)

First

  1. Bmp4 is first expressed in the inner cell mass of the blastocyst at very low level (Coucouvanis and Martin 1999).
  2. Embryonic diapause, or delayed implantation of the blastocyst, was first described in roe deer.
  3. Blastocyst implants, first evidence of embryonic endoderm cells covering the blastocoelic surface of the inner cell mass.

Conception

  1. Between four to six days after conception, the fertilized egg will develop into a blastocyst and burrow into the uterine lining, attaching itself firmly.
  2. The cells continue to divide 8 or 9 days following conception into a blastocyst.

Formation

  1. Blastocyst formation begins on day 5 post- egg retrieval and is defined by the presence of an inner cell mass and the outer cell mass or trophectoderm.
  2. Blastocyst: An embryo that has undergone multip le cellular divisions with the formation of a cavity within it.
  3. The mass at the embryonic pole of the blastocyst concerned with the formation of the body of the embryo.

Form

  1. The inner cell mass of the blastocyst will go on to form the embryo.
  2. By the third day following conception the cells have divided to form a small ball that is known as a blastocyst.
  3. When the blastocyst implants in the uterine wall, the cells from that outer layer begin to form what are called chorionic villi.

Outer

  1. The wall of the blastocyst takes on the function of becoming the outer layer of membranes (chorion) surrounding the embryo.
  2. Trophoblast - The outer layer of the cells forming the wall of the blastocyst.
  3. Week 1 blastocyst formation the outer layer of cells (adjacent to the zona pellucida) form a flat squamous epithelial layer of cells, the trophoblast layer.

Cavity

  1. The epiblast is adjacent to the trophoblast and made of columnar cells; the hypoblast is closest to the blastocyst cavity, and made of cuboidal cells.
  2. For example, the injection of cells from one embryo into the blastocyst cavity of another embryo.
  3. Blastocyst: A thin-walled hollow sphere made up of an outer layer of cells, a fluid filled cavity, and an inner cell mass containing pluripotent stem cells.

Blastocoel

  1. Blastocoel: The fluid-filled cavity inside the blastocyst. (Web site)

Embryogenesis

  1. Blastocyst - The blastocyst is the structure formed in early embryogenesis, after the formation of the blastocoel, but before implantation.

Categories

  1. Nature > Life > Animals > Embryo
  2. Trophoblast
  3. Implantation
  4. Uterus
  5. Nature > Life > Animals > Blastula

Related Keywords

    * Blastula * Cells * Fetus * Morula * Placenta * Trophoblast * Uterine Wall * Uterus * Zygote
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  Short phrases about "Blastocyst"
  Originally created: April 04, 2011.
  Links checked: June 07, 2013.
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