BIOSC-139 Lecture Notes - Lecture 32: Corpus Luteum, Follicular Phase, Fallopian Tube
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22 Sep 2020
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Ovarian cycle causes release of estrogen and progesterone e and p control uterine cycle. A peak in lh (trigger for ovulation), a secondary oocyte is released from the ovary. Vesicular follicles are left behind and becomes corpus luteum. During the secretory phase of the uterine cycle, the endometrium is . Removal of endometrium happens at beginning of follicular phase. Building up, responding directly to the production of estrogen and progesterone, preparing for the implantation of a fertilized ovum. Human corionic gonadotropin hormone (hcg) triggers corpus luteum to keep producing estrogen and progesterone. Corpus luteum keeps producing estrogen and progesterone until month 3 when placenta takes over. Epithelial lining of uterine tube = simple ciliated columnar. 1st cervix starting to dilate; ot being produced; contractions in uterine wall start to thin the cervix. 3rd baby moves down and out; placenta and amniotic sac and umbilical cord. Baby"s occipital bone is lateral and slides out face anterior (pelvic outlet)
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Related Questions
1. The site of implantation of a fertilized ovum is
A.The uterus |
B.. | The ovaries |
C. | The vag ina |
D. | The cervix |
2. Which statement correctly describes the secretory phase of the uterine (menstrual) cycle?
A. | Follicle stimulating hormone stimulates proliferation of the endometrium |
B. | During this phase, the endometrium detaches and sheds |
C. | Progesterone stimulates the endometrium to prepare for implantation |
D. | Decreased progesterone levels cause the endometrial cells to die |
Which events in the monthly female reproductive cycle occur simultaneously?
A. Menstruation and the estrogen surge |
B. | Endometrial proliferation and development of the vesicular follicle |
C. | Degeneration of the corpus luteum and increased LH and FSH secretion |
D. | The secretory phase in the uterus and decreased progesterone levels |
Please give some explanations, thanks.