Endocrine System & Hormone Balance Flashcards
7 cards from real NTA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Endocrine System & Hormone Balance flashcards as text
Which compounds from cruciferous vegetables support healthy estrogen metabolism in the liver?
Answer: Indole-3-carbinol and DIM
I3C/DIM promote favorable 2-hydroxylation estrogen pathways.
Which mineral is most closely linked to testosterone production and is rich in oysters?
Answer: Zinc
Zinc is a cofactor in testosterone synthesis and sperm health.
Which foods are notable sources of phytoestrogens?
Answer: Flaxseeds and soy
Lignans in flax and isoflavones in soy weakly bind estrogen receptors.
After ovulation, which structure produces most of the progesterone in the menstrual cycle?
Answer: Corpus luteum
The corpus luteum forms from the ruptured follicle and secretes progesterone.
Melatonin is synthesized by the pineal gland from which neurotransmitter?
Answer: Serotonin
Serotonin is converted to melatonin in darkness, regulating sleep.
Vitamin D functions in the body most like which of the following?
Answer: A steroid-like hormone
Vitamin D is a secosteroid that binds nuclear receptors to regulate genes.
Polycystic ovary syndrome (PCOS) is most commonly associated with which metabolic issue?
Answer: Insulin resistance with elevated androgens
Hyperinsulinemia stimulates ovarian androgen production in many with PCOS.
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Sources & references
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- nutritionaltherapy.com — Renewal, test delivery, eligibility, registration, test dates · verified Oct 2026
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