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

Revision as of 16:12, 1 June 2019

Attempt the Quiz - Placental Functions

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

Additional Information: endocrine placenta

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 | [[File:BGDsmall.jpg]]
 Here are a few simple Quiz questions that relate to Placental Functions from the practical.
-++Questions to be updated++
 <quiz display=simple>
-{Which of the following is the most correct statement about the primitive streak:
+{The difference in oxygen tension between the umbilical artery and umbilical vein is about:
 |type="()"}
-- &nbsp; extends from the primitive node to the parachordal plate
+- &nbsp; 100 pO<sub>2</sub>(torr)
-- &nbsp; is a primary inducer during organogenesis
+- &nbsp; 55 pO<sub>2</sub>(torr)
-+ &nbsp; is a site of migration of epiblast cells to form the mesoderm
+- &nbsp; 45 pO<sub>2</sub>(torr)
-|| The primitive streak is a site of migration of epiblast cells to form firstly endoderm and then the mesoderm.
++ &nbsp; 10 pO<sub>2</sub>(torr)
-- &nbsp; persists as the parachordal plate
+|| Correct! 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 the maternal arterial 100 pO<sub>2</sub>(torr)/venous 55 pO<sub>2</sub>(torr) difference of about 45 pO<sub>2</sub>(torr).
-- &nbsp; all of the above are correct
+- &nbsp; none of the above are correct
+File:Placenta_oxygen_exchange_levels.jpg
 </quiz>