Term
| alpha-fetoprotein function |
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Definition
| binds to estradiol and prevents it from crossing the blood brain barrier |
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Term
| how do you define the onset of puberty in females |
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Definition
1. age at first estrus (heat)
2. age at first ovulation
3. Age at which a female can support pregnancy without deleterious effects |
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Term
| how do you define the onset of puberty in male |
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Definition
1. age when behavioral traits are expressed
2. age at first ejaculation
3. age when spermatozoa first appear in the ejaculate
4. age when the ejaculate contains a threshold number of spermatozoa |
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Term
| what factors affect the development of the hypothalamic GnRH neurons in the female? |
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Definition
threshold body size/ composition
exposure to certain environmental or social cues |
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Term
| why do you need adequate GnRH to start puberty |
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Definition
| to stimulate the anterior love to release FSH and LH in high amounts. |
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Term
| what do hypothalmic neurons detect to control GnRH secretion |
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Definition
| glucose and fatty acid concentrations in blood |
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Term
| how do fat cells help stimulate GnRH |
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Definition
| fat secretes leptin that stimulate neuropeptide Y--kisspeptin neurons---GnRH neurons |
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