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Fetal Development
Fetal development refers to the stages of development of the fetus. In humans, there are three stages of development, divided into three trimesters. The fetus continues to develop from the day of conception until it is born after nine months.
500 Questions
How does the fetus get oxygen and nutrients and how does the fetus get eggs?
Asked by Wiki User
Via the umbilical vein which connects to the placenta in the womb of the host mother
How does an infant skull differ from an adult skull?
Asked by Wiki User
Radiation that penetrates only two inches into the brain of an adult will reach deeper into the brain of an child. Because children skulls are thinner than adults and their brains contain more absorptive fluid.
When is a fetus really alive?
Asked by Wiki User
This is a much argued matter of opinion depending on exact definitions of 'fetus' and 'alive'. Different views are given below:
Answer: Actually, it is only classed as alive once it is independent of its mother. However, it is considered 'viable' (can live if born after this time) after 24 weeks gestation (six months). BUT, that also means that newborn infants are okay to let die because they are still dependent on the mother.
Answer: The fetal period begins at the end of the 10th week of gestation (8th week of development) so clearly a fetus can not be alive prior to that. Apart from that, medically the first answer is correct.
Answer: There is no scientific debate about when the human organism is individual living being: when the egg is fertilized by the sperm. At this point it is a genetically unique single cell human organism and is just as alive as any protozoan or other single cell organism.
Answer: Well, I believe, scientifically you cannot be biased. If we are to consider single-celled organisms alive then we have to consider the first cell of a future baby as alive. Science agrees that the smallest form of life is a cell. Not to mention that the first cell of a baby has its own distinct DNA that will be transcribed and translated on and on. People would argue because they still want to have an abortion without the guilt feeling. I'm in no place to judge those people and I do not and will never judge them. But I believe aborting even the first cell of the future baby is murder.
Can you feel your baby in the first month of conception?
Asked by Wiki User
No. It is unusual to show a change in waistline within the first month of pregnancy.
What is the last part of the body to develop among fetus?
Asked by Wiki User
The cerebral cortex, the grey, folded, outermost layer of the cerebrum that is responsible for higher brain processes such as sensation, voluntary muscle movement, thought, reasoning, and memory.
How many weeks until the fetus has a heartbeat?
Asked by Wiki User
At 5 weeks pregnant there should be a heartbeat.
No, this is incorrect. The baby's heart starts beating between 6 & 8 weeks of pregnancy. If a pregnant woman were to read this and then have an ultrasound at 6 weeks an have no heartbeat yet, she might be devastated. Get your facts straight, please.
What is the average heartbeat of a 6 week pregnancy?
Asked by Wiki User
Starting at week 5 the fetal heart will accelerate at a rate of 3.3 beats per day for the next month.
The fetal heart begins to beat at approximately the same rate as the mothers, which is 80 to 85 bpm. Below illustrates the approximate fetal heart rate for weeks 5 to 9, assuming a starting rate of 80
Week 5 starts at 80 and ends at 103 bpm
Week 6 starts at 103 and ends at 126 bpm
Week 7 starts at 126 and ends at 149 bpm
Week 8 starts at 149 and ends at 172 bpm
At week 9 the fetal heartbeat tends to beat within a range of 155 to 195 bpm.
The fetal heart rate will begin to decrease and generally will fall within the range of 120 to 160 bpm by week 12.
Taken from: http://www.fetalsure.com/fetal-heart.html
Are human females born with a fixed number of eggs?
Asked by Wiki User
Answer 1 1 every couple of weeks or so Answer 2The answer above is incorrect. A female only releases one egg (or in some cases) 2 every couple of weeks (roughly once a month) but a female is actually born with millions of eggs in her ovaries
Does the baby grow inside uterus or stomach?
Asked by Wiki User
The uterus is the organ in which babies grow. vs. Food get digested in the stomach.
Do all fetus start as males?
Asked by Wiki User
No. All fetus' start as an egg that is fertilized from the male and the cells divide. Gender is determined at conception from the DNA in the sperm but it cannot be detected until a later time. Check www.3dpregnacny.com for week by week development of a fetus.
What is the most common congenital abnormality?
Asked by Wiki User
Please get the Ultrasonography done after two weeks of missed period and in second trimester. Your doctor will take care of it. They can be seen in Ultrasonography and you need not worry about it. Think of best and you will get it.
When does the heartbeat starts when im pregnant?
Asked by Wiki User
You never will be able to detect his heartbeat without specialized medical equipment. But if you're at the doctors office it should be right away.
The past couple of days I have felt my baby everyday..and now I dont. How often should you feel your baby move at 19 weeks?
Asked by Wiki User
I am actually 20 weeks which leaves me to understand that we are in close range. Nevertheless, you need not be worried as the baby is still very much premature and has a long way yet to go. But it is wise to ask such a question as being an expectant mother myself I sometimes worry over this as well. i.e yesterday and today, I have noticed a reduction the the amount of times my unborn one has moved. But do not worry, as long as you do the regular walking and move about, eat right and do not lift heavy equipment etc, get enough rest, you will be fine. From 25 weeks onwards, the kick counts will increase. :-)
Why does a fetus dream?
Asked by Wiki User
Yes. They often have particular sleeping patterns which the mother recognises
Where in development is the fetus at 10 weeks?
Asked by Wiki User
You are 10 weeks pregnant. (eight weeks after conception)
- From this week until birth, the developing organism is called a fetus.
- The fetus is now the size of a small strawberry.
- The feet are 2mm long (one tenth of an inch).
- The neck is beginning to take shape.
- The body muscles are almost developed. Baby has begun movement.
- While still too small for you to feel, your little one is wriggling and shifting.
- The jaws are in place. The mouth cavity and the nose are joined.
- The ears and nose can now be seen clearly.
- Fingerprints are already evident in the skin.
- Nipples and hair follicles begin to orm.
The unborn baby is now called a fetus. Though the fetus is constantly moving, you will not be able to actually feel fetal movement for several more weeks. All of the organs, muscles, and nerves are in place and beginning to function. As the hands and feet develop fingers and toes, they have lost their paddle like look. The touch pads on the fingers form and already have fingerprints.
During this week of pregnancy the crown to rump length of the fetus is 0.9 inch to 1.2 inches (22 to 30mm), weight 0.07 ounce (2gm). They are now on the way to forming their testicles or ovaries, getting ready for the next generation. Until the ninth week of fetus development, the fetal reproductive apparatus is the same one for the both sexes. The head is still large and curves into chest.
Each week your uterus grows larger with the baby growing inside it. You may begin to see your waistline growing thicker by this time. A pelvic exam will detect that your uterus has grown from it's normal, size of your fist, to a little bigger than a grapefruit.
Does the uterus expand as the fetus grows?
Asked by Wiki User
Doin sexual reproduction in science and have to answer questions, so here's the answer 2 this 1;
As the fetus gets bigger and bigger, it needs more and more space in the womb. Therefore, the uterus expands to give it that extra room, that's why the female's womb grows over the nine month period.
How does the nutrients from the mother get to the baby?
Asked by Tidus99
The developing baby (the fetus) gets its nutrition and oxygen from the mother through the umbilical chord; this chord is connected to the baby in the place of the belly button, where the nutrition enters the baby's intestines so that it is absorbed into their blood. The other end is attached to the placenta; it transfers all the nutrition and oxygen the baby needs from the mother.
What substance passes from the fetus to the mother?
Asked by Wiki User
The deoxygenated blood and the baby's waste products pass from the foetus to the mother. The mother can then dispose of these through her systems.
What does it mean when there is a yolk sac but no fetus?
Asked by Wiki User
A yolk sac is a precursor to a baby, usually yolk sacs are seen at 5 1/2 weeks. A fetal heart is detectable in the 6th week - that is what is a better indicator of having a baby, eventhough it is called an embryo at this point.
What can weed do to the fetus?
Asked by Wiki User
Absolutely NOT. I know a lot of women who smoked marijuana throughout pregnancy and had perfect babies. Marijuana has never hurt anyone, doesn't cause birth defects, and helps morning sickness. Besides, smelling it cannot get it into your system. Everything will be fine :)
Can an ultrasound detect anything at 2 weeks?
Asked by Wiki User
To confirm dates if you are unsure or to confirm a viable pregnancy if you are threatening to miscarry. However if you are sure of your dates and not miscarrying, please go to this website. http://www.midwiferytoday.com/articles/ultrasoundwagner.asp So much for Tom Cruise buying one to ensure the health of his baby.
Im 28 weeks pregnant can your baby survive if born now?
Asked by Wiki User
Yes, a baby has a chance at surviving at 28 weeks gestation.
How is the fetus protected in the uterus?
Asked by Minihm
The uterus. In placental mamals, this is via the placenta.
Can i see the size of a fetus at 16 weeks?
Asked by Wiki User
The size of fetus is 4 to 5 mm at 5 weeks pregnancy and about half an inch or 1.25 cm at 7 weeks of pregnancy. Fetus grows by geometrical proportion with time. So you can calculate the size of fetus at 6 weeks by mathematical calculation. Say the size be X mm at six weeks. So you have 4 mm, X mm, 25 mm in the series, So X squred equals to 4*25=100. X is equal to 10. So the size of the fetus will be 10 mm at 6 weeks.
