The main problems caused by thalidomide were amelia (absence of limbs) and phocomelia (absence of long bones).
About 100 micrometers
Fetal alcohol syndrome is a condition caused by the assumption of high quantities of alcohol during pregnancy, leading to effects such as low birth weight, mental retardation, irritable mood of newborn, and microcephalic head.
6/100 births.
In the abdominal and larger part of the Fallopian tube
The key terms of embryology related to the formation of a new individual are male and female sex cells (or gametes): the egg and the sperm. The egg and one sperm will unite at fertilization to initiate the development of a new individual.
Injection of a selected sperm with the best morphology into the egg cell
Cranial - codal progress
Only the haploid nucleus
Medical doctor William McBride, an obstetrician.
Crown-Rump Length
The fetal phase is from the 9th week to the birth (38 weeks/266 days), during which fetal development occurs and the organs that appeared during embryogenesis will grow and differentiate.
It can lead to a more conspicuous prevention of birth defects.
Blastomeres
Sexual reproduction or fertilization is a process in which the union of one male and one female gamete occurs. It is also possible to refer to sexual reproduction as coitus, copulation, or fertilization. Fertilization can also occur 'in vitro' (IVF 'In Vitro Fertilization').
Stage 17
Birth defects.
Zygote
ONTOGENESIS is the process of an individual organism growing organically, changing gradually from a simple to a more complex level.
When they reach the vagina
4 - 6mm
The embryonic phase is from fertilization to the 8th week (56 days) of development, during which all the most important primordial organs appear in the embryo.
CONCEPTION is the time of fertilization, while CONCEPTUS is the total group of cells that originates from the zygote and forms the embryo and its extra-embryonic related structures.
Thalidomide.
Crown-Rump Length
It allows the embryo to assume the classical position with the hands in front of the anterior surface of the body.
Birth defects are abnormalities that may occur during embryonic and fetal development and can be observed at birth, during the first year of life, and also in adults.
A totipotent cell is a blastomere from which we can form any kind of tissue, even intra or extra-embryonic. After a short time interval, blastomeres become MULTIPOTENT, which can form all types of tissues related to placenta or the embryo but not both of them anymore.
The embryo (fertilized egg)
Zygote
Organogenesis
Maternal
Embryology age is calculated starting from fertilization, while physicians calculate the age as gestational age (or menstrual) and use the last normal menstrual period (LNMP) as the starting point. Inverting fertilization age to LNMP age requires adding 2 weeks to have the same embryonic age.
A SECONDARY OOCYTE, that results from the first meiosis
The significance of organ development and the development of diseases or defects that may occur during embryonic and fetal development.
It is a process from zygote that indicates the proliferation of each cell which originates from the zygote, consisting of a sequence of mitosis.
In general, the length of the pregnancy is considered to be 280 days, or 40 weeks after the onset of the last normal menstrual period, or more accurately, 266 days or 38 weeks after fertilization.
A very useful drug for psychological consequences such as sleeping problems and anxiety.
Zygote
The term CONCEPTUS includes the developing embryo and the extra-embryonic tissue (placenta), while ABORTUS refers to the products of conception that are expelled from the uterus before the fetus is viable.
The oocyte
The highest level of risk for structural birth defects, and therefore the highest percentage of birth defects, is around the 5th week of embryonic life (about in between the 1st and 2nd half of embryonic development).
It functions as a kind of molecular shell and is composed of glycoproteins
Second meiosis will be resumed after fertilization
It is important to know the differences between embryogenesis and fetal development because during the embryonic period, the primordia of each organ system is established and it is at this time that each organ is most sensitive to the induction of a birth defect.
It is the formation and development of the organs in the developing embryo.
Crown-Heel Length
Spontaneous abortions, multiple births, low birth weight, pre-term delivery, birth defects
Zygote
