Difference between revisions of "Template:BGDA Practical 14 - Placental Functions Interactive"

From Embryology
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-   none of the above are correct
 
-   none of the above are correct
 
|| Incorrect! The difference in oxygen tension in the placenta between the umbilical artery 20 pO<sub>2</sub> (torr) and umbilical vein 30 pO<sub>2</sub> (torr) is therefore about 10 pO<sub>2</sub>(torr). This is significantly less that in the maternal circulation between arterial 100 pO<sub>2</sub>(torr)/venous 55 pO<sub>2</sub> (torr) difference of about 45 pO<sub>2</sub> (torr). See [[:File:Placenta_oxygen_exchange_levels.jpg|image - Placenta oxygen exchange levels]].
 
|| Incorrect! The difference in oxygen tension in the placenta between the umbilical artery 20 pO<sub>2</sub> (torr) and umbilical vein 30 pO<sub>2</sub> (torr) is therefore about 10 pO<sub>2</sub>(torr). This is significantly less that in the maternal circulation between arterial 100 pO<sub>2</sub>(torr)/venous 55 pO<sub>2</sub> (torr) difference of about 45 pO<sub>2</sub> (torr). See [[:File:Placenta_oxygen_exchange_levels.jpg|image - Placenta oxygen exchange levels]].
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 +
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{Which of the following hormones produced by the placenta is important for '''initially''' preserving the pregnancy?
 +
|type="()"}
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+ &nbsp; Human chorionic gonadotrophin
 +
|| Correct! Human chorionic gonadotrophin (hCG) like leutenizing hormone, initially supports the {{corpus luteum}} in ovary, that produces progesterone to maintain the pregnancy. Later in pregnancy, the placenta takes over the {{corpus luteum}} role.
 +
- &nbsp; Human chorionic somatommotropin
 +
|| Incorrect! Human chorionic somatommotropin (hCS) or placental lactogen stimulate (maternal) mammary development rise through pregnancy, stimulates maternal metabolic processes, breast growth. Human chorionic gonadotrophin (hCG) like leutenizing hormone, initially supports the corpus luteum in ovary, that produces progesterone to maintain the pregnancy. Later in pregnancy, the placenta takes over the {{corpus luteum}} role.
 +
- &nbsp; Human chorionic thyrotropin
 +
|| Incorrect! Human chorionic gonadotrophin (hCG) like leutenizing hormone, initially supports the corpus luteum in ovary, that produces progesterone to maintain the pregnancy. Later in pregnancy, the placenta takes over the {{corpus luteum}} role.
 +
- &nbsp; Human chorionic corticotropin
 +
|| Incorrect! Human chorionic gonadotrophin (hCG) like leutenizing hormone, initially supports the corpus luteum in ovary, that produces progesterone to maintain the pregnancy. Later in pregnancy, the placenta takes over the {{corpus luteum}} role.
 +
 +
 +
{Which of the following hormones produced by the placenta is important for '''later''' preserving the pregnancy?
 +
|type="()"}
 +
+ &nbsp; progesterone
 +
|| Correct! Later in pregnancy, the placenta takes over the {{corpus luteum}} role of progesterone production to preserve the pregnancy.
 +
- &nbsp; Human chorionic somatommotropin
 +
|| Incorrect! Later in pregnancy, the placenta takes over the {{corpus luteum}} role of progesterone production to preserve the pregnancy.
 +
- &nbsp; Human chorionic gonadotrophin
 +
|| Incorrect! Later in pregnancy, the placenta takes over the {{corpus luteum}} role of progesterone production to preserve the pregnancy.
 +
- &nbsp; Human chorionic thyrotropin
 +
|| Incorrect! Later in pregnancy, the placenta takes over the {{corpus luteum}} role of progesterone production to preserve the pregnancy.
 +
- &nbsp; Follicle Stimulating Hormone
 +
|| Incorrect! Later in pregnancy, the placenta takes over the {{corpus luteum}} role of progesterone production to preserve the pregnancy.
 +
- &nbsp; Relaxin
 +
|| Incorrect! Later in pregnancy, the placenta takes over the {{corpus luteum}} role of progesterone production to preserve the pregnancy.
 +
  
  

Revision as of 17:24, 1 June 2019

Placental Functions Interactive Component

Attempt the Quiz - Placental Functions  
BGDsmall.jpg

Here are a few simple Quiz questions that relate to Placental Functions from the practical.

1 The difference in oxygen tension between the umbilical artery and umbilical vein is about:

  100 pO2 (torr)
  55 pO2 (torr)
  45 pO2 (torr)
  10 pO2 (torr)
  none of the above are correct

2 Which of the following hormones produced by the placenta is important for initially preserving the pregnancy?

  Human chorionic gonadotrophin
  Human chorionic somatommotropin
  Human chorionic thyrotropin
  Human chorionic corticotropin

3 Which of the following hormones produced by the placenta is important for later preserving the pregnancy?

  progesterone
  Human chorionic somatommotropin
  Human chorionic gonadotrophin
  Human chorionic thyrotropin
  Follicle Stimulating Hormone
  Relaxin


BGDsmall.jpg
Practical 14: Implantation and Early Placentation | Villi Development | Maternal Decidua | Cord Development | Placental Functions | Diagnostic Techniques | Abnormalities

Additional Information: endocrine placenta