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Question
The role of melatonin in puberty of humans is well established and critical.
Answer
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Which of the following is a precursor to melatonin synthesis?
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Pubic and axillary hair growth at puberty is from increased secretion of
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Epiphyseal growth in males is stimulated by estrogen.
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The rate at which GnRH is secreted from the hypothalamus determines whether LH or FSH is secreted from the anterior pituitary.
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A male with 5 alpha-reductase deficiency will have male internal sex organs but more female appearing external genitals.
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Males lacking testosterone receptors would
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A. 23
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Cryptorchid males do not produce testosterone.
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What hormone may play a role in reducing the size of the uterus following delivery?
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B. prostaglandin
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DHEAS travels from the fetal adrenal cortex to the placenta where it is converted into oxytocin.
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Cortisol from the fetal adrenal gland will stimulate maturation of the lungs and production of surfactant.
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arteries
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A ball of about eight cells formed about 50 to 60 hours after fertilization is called a
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The progressive fusion of the acrosomal membrane with the plasma membrane of the sperm is called the
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B. osteoclasts.
C. osteocytes.
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Bone resorption is produced by the action of _____________, which return bone calcium and phosphate to the blood.
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Pheromones are responsible for the dormitory effect of synchronized menstrual cycles of females living together.