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Unformatted text preview: rnal
behavior, romantic attachment, etc.
Female Menstrual Cycle:
Once an egg is mature and released, LH (Luteinizing Hormone) produces the corpus luteum.
Corpus luteum creates progesterone. Progesterone is the main hormone which builds up
Cycle ends with deterioration of egg and corpus luteum if not implanted, stops production of
progesterone & the LH/FSH from pituitary gland, lining begins to fall off, starts menstrual cycle.
Eventually the hypothalamus reading low estrogen/progesterone levels tells the pituitary gland to
release FSH (Follicle Stimulating Hormone) to develop follicles. 45 days later, the LH takes over
and matures it and it ruptures within 24 hours. START CYCLE OVER AGAIN
Cycle continues until menopause or pregnancy or sudden loss in weight.
During pregnancy, the placenta releases HCG (pregnancy hormone). HCG produced in these
amounts only during pregnancy. After 2 weeks of this production there is enough of it to register
on a pregnancy urine test.
HCG keeps corpus luteum alive which keeps up production of progesterone. Progesterone
production during pregnancy ensures that the endometrial lining does not fall off.
Men have the same parts in their breasts, just some pieces aren’t as fully developed (mammary
glands). Estrogen develops mammary glands. Prolactin: causes milk production in mammary glands. Only present after delivery, it
continues as long as breast are suckled after pregnancy. > wet nurses. The sucking is
what causes the pituitary gland to produce prolactin.
Colostrum: Released from nipple. premilk. Often babies will get this during their first feeding.
Oxytocin: Causes contractions in female menstrual cycle. Also can be released by sexual
arousal or nipple suckling. Causes ejection of milk by small contractions in breasts. This will be
produced for as long as nipples are being stimulated after a pregnancy, meaning milk will be
produced as long as desired until child is no longer being breastfed. Oxytocin causes you to
have positive feelings to those around you. Bonds you to sexual partner during intercourse or
6 your baby during breast feeding.
Zona Pellucida: Gives protection from bacteria for the egg, allows sperm to pass through
*Only one sperm passes through the egg membrane, which changes the polarity of it
and prevents other sperm from getting to the egg.
Acrosome: Equivalent of zona pellucida for sperm, protects it as it travels to the egg
Dates to Remember:
313 Constantine Converted to Christianity: Before 313, Romans believed in Zeus and
Gods, and Christians were punished. After 313, Christianity became the religion and
nonchristians were punished.
353430 Augustine:settled the question between Jesus’ birth! Whether it was derived
from sex or not. And the conclusion, was since Jesus was perfect, then he was of virgin
birth. Since then, sin has been passed down from generation to generation, because of
lust. We are “born in a state of sin.”...
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- Spring '08