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14 Cards in this Set
- Front
- Back
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What happens to an oocyte after it's been released by the ovary?
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It is drawn into the uterine tube and fertilized (or not)
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What happens to the egg after it's been drawn into the uterine tube?
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The fertilized (or not) egg travels down the uterine tube and implants into the endometrium of the uterus
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What is the endometrium of the uterus?
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It is the site of implantation of the egg
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What are the three phases of the uterine cycle? (title and duration)
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1. Menstrual phase (Days 1-5)
2. Proliferative phase (Days 6-14) 3. Secretory phase (Days 15-28) |
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What occurs during the menstrual phase?
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The endometrium is shed. The capillaries break down and bleeding occurs.
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What happens during the same time as the menstrual phase?
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The ovary begins a new follicular phase
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What happens during the proliferative phase?
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The endometrium proliferates, that is, the capillaries begin to regrow
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What happens in the ovaries during the proliferative phase?
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Ovary continues follicular phase and the follicles secrete estrogen to stimulate the proliferation of the endometrium
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What triggers the switch from proliferative phase to the secretory phase?
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Ovulation
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What occurs during the secretory phase?
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Glands in the endometrium secrete nutrients called uterine milk to nourish fertilized egg as it implants
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What is occurring in the ovaries during the secretory phase?
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The ovary enters the luteal phase and the progesterone from the corpus luteum stimulates secretion of the endometrium
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What occurs at the end of the uterine cycle?
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There is a drop in hormone levels which triggers endometrium to be shed. This starts the menstrual cycle again
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What occurs at the end of the ovarian cycle?
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If fertilization does not occur, the corpus luteum dies and estrogen and progesterone levels drop.
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What kind of feedback triggers ovulation in the ovarian cycle?
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Positive feedback
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