hCG and the corpus luteum
What keeps the corpus luteum producing progesterone in early pregnancy?
Answer B: explanation for every choice
A
Progesterone suppresses LH, which is why the corpus luteum would otherwise fail.
B
Correct. hCG acts like LH to sustain the corpus luteum until the placenta takes over progesterone production.
C
FSH stimulates follicle development, not the corpus luteum.
D
Oxytocin drives uterine contractions and milk ejection.
TakeawayhCG rescues the corpus luteum until the placenta takes over.
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Reviewed 2026-11-05 by a medical student. Spot an error? Report it with question ID bb140.