_Welcome to week 5 of your pregnancy!
_What’s Happening During Week 5:
Fertiliztion generally occurs within a day of ovulation (day 15 of an 28 day cycle) typically inside longest and widest portion of the fallopian tube as I described in week 3. As soon as the fusion of the sperm along with the egg this new form is known as a zygote. A zygote is the earliest developmental stage of an human and is a cell containig 46 chromosomes, formed with the joining of 23 chromosomes from each parent.
5th week of pregnancy
This new cell remains a zygote approximately 2 days during which this cell mass divides repeatedly mainly because it travels down the fallopian tube towards uterus. Once it forms in a solid ball of 12 or higher of these cells, the zygote sets out to resemble a mulberry hence this new structure is referred to as a morula which is Latin for mulberry. ( morula video ) This morula enters the uterine cavity on day 18 or 19 in the cycle. Fluid from the endometrial cavity penetrates this cell mass to generate a central cavity. During these moments the morula is become what is now termed as a blastocyst. When this happens the blastocyst as well as tissue is divided into two crucial layers. The surface, the trophoblast creates the chorionic membranes along with the fetal contribution on the placenta. The inner cell layer develops in the embryo, amnion, umbilical cord and the yolk sac. Right at the end of the 3rd week the blastocyst sets out to implant into the thickened endometrium. In the 4th week the blastocyst measuring exactly the size of a pin head across becomes fully imbedded in the emdometrial tissue. The endometrial tissue could be the lining of your uterus or womb this is certainly thick in preparation just for this implantation. It is at this time in the event the blastocyst and trophoblastic tissue invades the endometrium which a small amount of bleeding can take place, called implantation bleed, and flows out of your vagina and can be confused with a menstrual period.
This is a time in the event the cells multiply and differentiate rapidly. Much of this formation is the yolk sac a structure that gives nutrients in the early days as well as a tiny embryo develops relating to the yolk sac and the amnion and primitive placental circulation presenting been established. Right now this formation of conception is growing to about 2 to 3 mm which enable it to be identified by high tech ultrasound equipment as being a tiny fluid filled sac.
During week 5, a final week of the conception stage of pregnancy you have missed your period and pregnancy is now confirmed with the a higher level HCG in your blood or urine. The fluid filled sac referred to as the chorionic or gestational sac has grown to around 5mm and the yolk sac can be identifed on this fluid filled sac. The embryo has transformed itself into three different layers the ectoderm, mesoderm and endoderm despite these transformations exactly the fluid filled sac might be detectable by ultrasound instead of the embryo just yet.
5th week of pregnancy
Fertiliztion generally occurs within a day of ovulation (day 15 of an 28 day cycle) typically inside longest and widest portion of the fallopian tube as I described in week 3. As soon as the fusion of the sperm along with the egg this new form is known as a zygote. A zygote is the earliest developmental stage of an human and is a cell containig 46 chromosomes, formed with the joining of 23 chromosomes from each parent.
5th week of pregnancy
This new cell remains a zygote approximately 2 days during which this cell mass divides repeatedly mainly because it travels down the fallopian tube towards uterus. Once it forms in a solid ball of 12 or higher of these cells, the zygote sets out to resemble a mulberry hence this new structure is referred to as a morula which is Latin for mulberry. ( morula video ) This morula enters the uterine cavity on day 18 or 19 in the cycle. Fluid from the endometrial cavity penetrates this cell mass to generate a central cavity. During these moments the morula is become what is now termed as a blastocyst. When this happens the blastocyst as well as tissue is divided into two crucial layers. The surface, the trophoblast creates the chorionic membranes along with the fetal contribution on the placenta. The inner cell layer develops in the embryo, amnion, umbilical cord and the yolk sac. Right at the end of the 3rd week the blastocyst sets out to implant into the thickened endometrium. In the 4th week the blastocyst measuring exactly the size of a pin head across becomes fully imbedded in the emdometrial tissue. The endometrial tissue could be the lining of your uterus or womb this is certainly thick in preparation just for this implantation. It is at this time in the event the blastocyst and trophoblastic tissue invades the endometrium which a small amount of bleeding can take place, called implantation bleed, and flows out of your vagina and can be confused with a menstrual period.
This is a time in the event the cells multiply and differentiate rapidly. Much of this formation is the yolk sac a structure that gives nutrients in the early days as well as a tiny embryo develops relating to the yolk sac and the amnion and primitive placental circulation presenting been established. Right now this formation of conception is growing to about 2 to 3 mm which enable it to be identified by high tech ultrasound equipment as being a tiny fluid filled sac.
During week 5, a final week of the conception stage of pregnancy you have missed your period and pregnancy is now confirmed with the a higher level HCG in your blood or urine. The fluid filled sac referred to as the chorionic or gestational sac has grown to around 5mm and the yolk sac can be identifed on this fluid filled sac. The embryo has transformed itself into three different layers the ectoderm, mesoderm and endoderm despite these transformations exactly the fluid filled sac might be detectable by ultrasound instead of the embryo just yet.
5th week of pregnancy