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Which period of prenatal development is where the major organs are first developing?
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Can organs be transported?
Yes, as long as they are kept cold and sterile - they will only be viable for a short period of time.
In placentals what is the time of development from fertilization to birth is called the?
It is called the gestation period.
When do organ and organs system begin to develop in humans?
Organogenesis, the formation of organs and organ systems begin at 3 weeks. The period from 3rd to 8th week are the most critical for organogenesis and should something go wrong during this period, it may lead to major congenital anomalies.
What is most likely to happen if teratogens are introduced during the germinal period of development?
The zygote will not implant on the uterine wall.
What does a male and a female need to produce offspring?
They both need to have fertile sexuall reproductive organs. Both should be of good health when breeding and during gestation period.
What period of prenatal development lasts the shortest?
The germinal period is the shortest period of prenatal development, lasting approximately two weeks. This period begins at fertilization when the egg is fertilized by sperm and ends when the fertilized egg attaches to the uterine wall.
What last 7 months of prenatal development?
The fetal period.
What is the first period of prenatal development?
The first period of prenatal development is the germinal stage, which lasts for the first two weeks after conception. During this stage, the fertilized egg, or zygote, undergoes rapid cell division and eventually forms a blastocyst. The blastocyst implants itself into the uterine wall, marking the end of the germinal stage.
The period of prenatal development from 2 to 8 weeks is called the stage?
embryonic
What is the period of prenatal development that occurs2 to 8 weeks after conception?
The embryonic period occurs from the beginning of fertilization to about the 8th week after conception
What is a prenatal period?
The prenatal period is anytime from the time of conception until the baby is born.
The heart begins to beat during the period of prenatal development?
18-22 days 18-22 days
This period of development is called?
the developing embryois surroudedby a protective membrane called the
Does taking prenatal pills affect your period?
No, taking prenatal vitamins won't impact on your period. Prenatal pills are typically vitamins, which could see you have a better period all together, but won't be a major change.
What happens during the prenatal period?
The term prenatal period refers to the time in pregnancy between conception and birth. The prenatal period last for 40 weeks, which is roughly nine months. The prenatal period is divided into three trimesters, with each trimester lasting approximately three months. During this time, the embryo develops into a fetus and then into a viable human baby. There are many changes in both mother and child during the prenatal period, including weight gain in both and physical and hormonal changes in each. During the first trimester of the prenatal period, a woman goes through many physical and emotional changes. This period generally begins with a missed period, which leads to a positive pregnancy test. During the first trimester, the doctor will establish a due date for the baby and may perform an ultrasound to ensure proper fetal development. The soon-to-be mother will likely experience morning sickness and food cravings during the first trimester. Hormonal changes may cause mood changes such as crying easily or extreme euphoria. Fetal development during the first trimester is remarkable. Conception occurs when a sperm cell and egg cell join. These cells grow and multiply immensely during the first few weeks of the prenatal period. By the end of the first trimester, key organs have begun to develop, including the brain, heart, and lungs. The second portion of the prenatal period is referred to as the second trimester. The risk of miscarriage is greatly reduced by this point, and the uncomfortable symptoms of morning sickness generally fade away. At this point, the new mother may experience the urge to urinate more frequently because of pressure caused by the growing fetus. The pregnancy tends to become noticeable to others at this point, and maternity clothes are typically needed now. All of the important organs have already formed in the fetus, and this trimester focuses on further growth and development of these vital body systems. The body systems of the fetus continue to mature in the third trimester. Early labor is possible at this point, and the chances of infant survival is high. Lung development increases dramatically during this time, and most body hair has disappeared.
What changes occur from the pre adolescene period to adolescene period?
prenatal
During which prenatal period are the placenta and umbilical chord formed?
embryonic period
