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NBME 20 Answers

nbme20/Block 1/Question#25 (reveal difficulty score)
A 25-year-old primigravid woman at 42ย weeksโ€™ ...
Phosphoinositide hydrolysis ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
tags: biochem endo

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submitted by โˆ—hayayah(1212)
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Oxytocin uses IP3 signaling pathway.

GnRH, Oxytocin, ADH (V1-receptor), TRH, Histamine (H1-receptor), Angiotensin II, Gastrin.

FA mnemonic: "GOAT HAG"

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dickass  I figured "if Oxytocin can cause milk secretion and enough uterine contractions to expel a full baby, it's probably activating smooth muscle contraction through Gq coupled second messengers" +9
randi  signaling pathways in FA2019 p332 +3
realnorthomfs  FA2020 p337 +
bfinard1  Can someone smarter than me explain how the IP3 pathway involves phosphoinositide hydrolysis? +
peachespeaches  IP3=phosphoinositide +



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