BLD 402 EXAM 4: PREGNANCY AND FETAL DEVELOPMENT
QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
GRADED A++ LATEST UPDATE
Where are the outer cells of the ovum called?
trophoblasts
Where is hCG produced?
placenta
What two hormones does the corpus luteum produce?
estrogen and progesterone
When are hCG levels highest during pregnancy?
1st trimester
During the first trimester what estrogen is produced?
Estradiol (E2)
During the first trimester what is produced by the placenta?
hCG
During the first trimester what is produced by the corpus luteum?
Progesterone
Estradiol (E2)
During the second trimester what is produced by the placenta?
, hCG
Progesterone
estriol (E3)
During the second trimester what is produced by the corpus luteum?
Progesterone
Estradiol (E2)
During the third trimester what is produced by the placenta?
hCG
progesterone
Estriol (E3)
During the third trimester what is produced by the corpus luteum?
nothing
What is the precursor for hormone synthesis?
cholesterol
What part of hormone synthesis occurs in the placenta?
cholesterol --> pregnenolone --> progesterone
What part of hormone synthesis occurs in the fetus?
Pregnenolone --> 16aOH-DHEA
Where in the fetus is pregnenolone made?
Adrenal cortex
Where in the fetus is 16aOH-DHEA made?
Liver
What is synthesized from 16aOH-DHEA and where does it occur?
QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
GRADED A++ LATEST UPDATE
Where are the outer cells of the ovum called?
trophoblasts
Where is hCG produced?
placenta
What two hormones does the corpus luteum produce?
estrogen and progesterone
When are hCG levels highest during pregnancy?
1st trimester
During the first trimester what estrogen is produced?
Estradiol (E2)
During the first trimester what is produced by the placenta?
hCG
During the first trimester what is produced by the corpus luteum?
Progesterone
Estradiol (E2)
During the second trimester what is produced by the placenta?
, hCG
Progesterone
estriol (E3)
During the second trimester what is produced by the corpus luteum?
Progesterone
Estradiol (E2)
During the third trimester what is produced by the placenta?
hCG
progesterone
Estriol (E3)
During the third trimester what is produced by the corpus luteum?
nothing
What is the precursor for hormone synthesis?
cholesterol
What part of hormone synthesis occurs in the placenta?
cholesterol --> pregnenolone --> progesterone
What part of hormone synthesis occurs in the fetus?
Pregnenolone --> 16aOH-DHEA
Where in the fetus is pregnenolone made?
Adrenal cortex
Where in the fetus is 16aOH-DHEA made?
Liver
What is synthesized from 16aOH-DHEA and where does it occur?
