Hey guys I found a cool video with a really great teacher (MD). Sometimes I look at NCLEX-RN KA Videos if I really dont understand something.
I am aware that the DETAILS mentioned in this video are wayyyy too much for what the MCAT asks, BUT it doesn't hurt to get a really good picture of what the differences are in gas exchange physiology in utero vs adult life. HbA and HbF can be tested on as well as the how the fetus obtains nutrients and oxygen and what it does with it (ie: fetal lung and liver shunts) SOOO I decided to watch this video and reallllllyyyy am impressed with how he tought it. I will forever have a great visualization of fetal circulation if theres ever a science passage on it and I thought Id share it with yall. Link below:
So I've been going through my Kaplan BIO book and towards the end of the embryogenesis and development chapter they talk about fetal circulation and a little bit about gestation and birth.
I couldn't find it being mentioned on the AAMC BB outline at all so just wondering if this is information that will be tested on or if they just added it just in case?
If yes, what should I know? Did not see it on AAMC's topic list.. but stilll.
I'm a student in Paramedic school, and just had a quick question about clotting within the fetus. Due to the lack of regular blood flow into the fetus' pulmonary circulation, wouldn't the blood be more likely to clot? Does the placenta give off some kind of anti-clotting agent? or is blood flow enough to keep it moving? Does the placenta not allow platelets to pass through it?
I assume blood pressure in the pulmonary circulation is limited because of the Foramen ovale and ductus arteriosus being open. Thanks
Key points
- Linoleic acid consumption is increasing
- We investigated if elevated linoleic acid in pregnancy was deleterious
- Maternal and fetal body and organ weights were not affected by elevated linoleic acid consumption
- Maternal lipids and leptin [helps inhibit hunger and regulate energy balance, so the body does not trigger hunger responses when it does not need energy.] were altered due to elevated linoleic acid consumption
- Male offspring numbers were reduced due to elevated linoleic acid consumption
Abstract
Dietary intakes of linoleic acid (LA) have increased dramatically in Western populations, including in women of reproductive age. Proβinflammatory effects of LA may have detrimental effects on maternal and offspring outcomes. We aimed to investigate if consumption of a maternal diet with elevated LA altered maternal inflammatory or metabolic markers during pregnancy, fetal growth and/or the sex ratio of the offspring. Female Wistar Kyoto rats consumed a diet high in LA (HLA) (6.21% of energy) or a diet low in LA (LLA) (1.44% of energy) for 10 weeks prior to mating and during pregnancy. Pregnant rats were sacrificed at embryonic day 20 (E20). There were no differences in maternal or fetal body weights or organ weights in the HLA group compared to LLA group. There was no difference in maternal circulating cytokine concentrations between dietary groups. In the maternal liver, ILβ1Ξ± concentrations were significantly lower, and TNFβΞ± and ILβ7 significantly higher in the HLA group. Total plasma cholesterol, LDLβcholesterol, HDL cholesterol and the total: HDL cholesterol ratio were lower in dams fed the HLA diet. mRNA expression of sterol regulatory element binding transcription factor 1 (SREBFβ1) and leptin in maternal adipose tissue was lower in the HLA group, as were circulating leptin concentrations. The proportion of male fetuses was lower and circulating prostaglandin E metabolite concentrations were increased in the HLA group. In conclusion, consumption of a maternal diet high in linoleic acid alters cholesterol metabolism and prostaglandin E metabolite concentrations that may contribute to the reduced proportion of males.
Link: https://physoc.onlinelibrary.wiley.com/doi/abs/10.1113/JP277583
(Found here)
βWhen pregnant, the cells of the baby migrate into the mothers bloodstream and then circle back into the baby, itβs called βfetal-maternal microchimerismβ.β
For 41 weeks, the cells circulate and merge backwards and forwards, and after the baby is born, many of these cells stay in the motherβs body, leaving a permanent imprint in the mothers tissues, bones, brain, and skin, and often stay there for decades. Every single child a mother has afterwards will leave a similar imprint on her body, too.
Even if a pregnancy doesn't go to full term or if you have an abortion, these cells still migrate into your bloodstream.
Research has shown that if a mother's heart is injured, fetal cells will rush to the site of the injury and change into different types of cells that specialize in mending the heart.
The baby helps repair the mother, while the mother builds the baby.
How cool is that?
This is often why certain illnesses vanish while pregnant.
Itβs incredible how mothers bodies protect the baby at all costs, and the baby protects & rebuilds the mother back - so that the baby can develop safely and survive.
Think about crazy cravings for a moment. What was the mother deficient in that the baby made them crave?
Studies have also shown cells from a fetus in a mothers brain 18 years after she gave birth. How amazing is that?β
If youβre a mom you know how you can intuitively feel your child even when they are not there.
Well, now there is scientific proof that moms carry them for years and years even after they have given birth to them.
I find this to be so very beautiful.
Post credit: Heart Strings
I don't want to step on anybody's toes here, but the amount of non-dad jokes here in this subreddit really annoys me. First of all, dad jokes CAN be NSFW, it clearly says so in the sub rules. Secondly, it doesn't automatically make it a dad joke if it's from a conversation between you and your child. Most importantly, the jokes that your CHILDREN tell YOU are not dad jokes. The point of a dad joke is that it's so cheesy only a dad who's trying to be funny would make such a joke. That's it. They are stupid plays on words, lame puns and so on. There has to be a clever pun or wordplay for it to be considered a dad joke.
Again, to all the fellow dads, I apologise if I'm sounding too harsh. But I just needed to get it off my chest.
Do your worst!
I'm surprised it hasn't decade.
βWhen pregnant, the cells of the baby migrate into the mothers bloodstream and then circle back into the baby, itβs called βfetal-maternal microchimerismβ.β
For 41 weeks, the cells circulate and merge backwards and forwards, and after the baby is born, many of these cells stay in the motherβs body, leaving a permanent imprint in the mothers tissues, bones, brain, and skin, and often stay there for decades. Every single child a mother has afterwards will leave a similar imprint on her body, too.
Even if a pregnancy doesn't go to full term or if you have an abortion, these cells still migrate into your bloodstream.
Research has shown that if a mother's heart is injured, fetal cells will rush to the site of the injury and change into different types of cells that specialize in mending the heart.
The baby helps repair the mother, while the mother builds the baby.
How cool is that?
This is often why certain illnesses vanish while pregnant.
Itβs incredible how mothers bodies protect the baby at all costs, and the baby protects & rebuilds the mother back - so that the baby can develop safely and survive.
Think about crazy cravings for a moment. What was the mother deficient in that the baby made them crave?
Studies have also shown cells from a fetus in a mothers brain 18 years after she gave birth. How amazing is that?β
If youβre a mom you know how you can intuitively feel your child even when they are not there.
Well, now there is scientific proof that moms carry them for years and years even after they have given birth to them.
I find this to be so very beautiful.
Post credit: Heart Strings
I thought Iβll share this beautiful message here.
βWhen pregnant, the cells of the baby migrate into the mothers bloodstream and then circle back into the baby, itβs called βfetal-maternal microchimerismβ.β
For 41 weeks, the cells circulate and merge backwards and forwards, and after the baby is born, many of these cells stay in the motherβs body, leaving a permanent imprint in the mothers tissues, bones, brain, and skin, and often stay there for decades. Every single child a mother has afterwards will leave a similar imprint on her body, too.
Even if a pregnancy doesn't go to full term or if you have an abortion, these cells still migrate into your bloodstream.
Research has shown that if a mother's heart is injured, fetal cells will rush to the site of the injury and change into different types of cells that specialize in mending the heart.
The baby helps repair the mother, while the mother builds the baby.
How cool is that?
This is often why certain illnesses vanish while pregnant.
Itβs incredible how mothers bodies protect the baby at all costs, and the baby protects & rebuilds the mother back - so that the baby can develop safely and survive.
Think about crazy cravings for a moment. What was the mother deficient in that the baby made them crave?
Studies have also shown cells from a fetus in a mothers brain 18 years after she gave birth. How amazing is that?β
If youβre a mom you know how you can intuitively feel your child even when they are not there.
Well, now there is scientific proof that moms carry them for years and years even after they have given birth to them.
I find this to be so very beautiful.
Post credit: Heart Strings
