BGDA Practical Placenta - Placental Functions: Difference between revisions
From Embryology
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* oxygen, carbon dioxide, carbon monoxide | * oxygen, carbon dioxide, carbon monoxide | ||
* water, glucose, vitamins | * water, glucose, vitamins | ||
* electrolytes | * electrolytes | ||
* maternal antibodies | * '''waste products''' | ||
** urea, uric acid, bilirubin. | |||
* '''hormones''' | |||
** mainly steroid, protein hormones poorly transported. | |||
** maternal thyroid hormone can slowly cross. | |||
** fetal insulin can impact on maternal diabetes. | |||
* '''maternal antibodies''' | |||
** maternal IgG antibodies are transferred from about week 13 (GA) across the placenta | ** maternal IgG antibodies are transferred from about week 13 (GA) across the placenta | ||
** from the maternal lacunae syncytiotrophoblast cell endosomes bind IgG through neonatal Fc receptors. | ** from the maternal lacunae syncytiotrophoblast cell endosomes bind IgG through neonatal Fc receptors. | ||
* drugs and their metabolites (fetal drug addiction) | * drugs and their metabolites (fetal drug addiction) | ||
* infectious agents (cytomegalovirus, rubella, measles, microorganisms) | * infectious agents (cytomegalovirus, rubella, measles, microorganisms) | ||
Revision as of 12:42, 4 June 2012
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Term Placenta
Exchange
|
|
- oxygen, carbon dioxide, carbon monoxide
- water, glucose, vitamins
- electrolytes
- waste products
- urea, uric acid, bilirubin.
- hormones
- mainly steroid, protein hormones poorly transported.
- maternal thyroid hormone can slowly cross.
- fetal insulin can impact on maternal diabetes.
- maternal antibodies
- maternal IgG antibodies are transferred from about week 13 (GA) across the placenta
- from the maternal lacunae syncytiotrophoblast cell endosomes bind IgG through neonatal Fc receptors.
- drugs and their metabolites (fetal drug addiction)
- infectious agents (cytomegalovirus, rubella, measles, microorganisms)
Endocrine
Protein and steroid hormones.
- Human chorionic gonadotrophin (hCG) - like leutenizing hormone, supports corpus luteum in ovary, pregnant state rather than menstrual, maternal urine in some pregnancy testing
- Human chorionic somatommotropin (hCS) - or placental lactogen stimulate (maternal) mammary development
- rise through pregnancy, stimulates maternal metabolic processes, breast growth
- Human chorionic thyrotropin (hCT)
- Human chorionic corticotropin (hCACTH)
- Relaxin
- Steroid Hormones - progesterone (maintains pregnancy), estrogens (fetal adrenal/placenta)
Placental Metabolism
Synthesises - glycogen, cholesterol, fatty acids
- provides nutrient and energy
Terms
BGDA: Lecture 1 | Lecture 2 | Practical 3 | Practical 6 | Practical 12 | Lecture Neural | Practical 14 | Histology Support - Female | Male | Tutorial
Glossary Links
- Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link
Cite this page: Hill, M.A. (2024, April 26) Embryology BGDA Practical Placenta - Placental Functions. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/BGDA_Practical_Placenta_-_Placental_Functions
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
