roductive Preavulatory/Postmenstrual/Follicular Estrogen, progesterone Corpus lu
ID: 3481280 • Letter: R
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roductive Preavulatory/Postmenstrual/Follicular Estrogen, progesterone Corpus luteum, Fallopian tube Myometrium Oogenesis Ovulation Menarche Estrogen OT One PRL FSH Menopause Secondary oocytes Corpus luteum, progesterone remenstrual/luteal Cervix Low 1. Uterine tubes are also known as: 2. Fingerlike projections of uterine tube. 3. Fertilization normally takes place in this duct 4. Embryonic implantation and development occurs here 5. Narrower portion of the uterus, directed inferiorly. 6. The muscle layer of the uterus. 7. Two layers of endometrium that slough off during menstruation. 8. Phase between end of menses and ovulation. 9. Phase between ovulation and beginning ofmenses. 10. In a normal 28-day cycle, day 14 is when 11. LH is known as 12. Hormone that triggers cell division in endometrium 13. Temporary gland that secretes large amounts of this hormone 14. Fall in levels of these hormones leads to menses 15. Cessation of menstrual cycles is known as 16. Start of menstrual cycle occurs at 17. Hormone responsible for milk production and secretion. 18. Hormone responsible for uterine contractions, milk ejection. 19. PRL secretion is stimulated by 20. Ovum is formed by this process. 21. Cells produced at the end of Meiosis I of Oogenesis 22. How many functional eggs are produced at the end of Meiosis 23. Follicular phase is stimulated by this hormone. 24. Ruptured follicle transforms into this temporary endocrine gland occurs. hormone. levels ofestrogen and progesteroneExplanation / Answer
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In the absence of progesterone, the arteries supplying blood to the functional layer constrict, so that cells in that layer become ischaemic and die, leading to menstruation.
8. Luteal phase (day 15-28):This phase begins on the 15th day and lasts till the end of the cycle. The following events occur during this phase:
9. Follicular phase: The follicular phase begins from the first day of menses until ovulation
10. In a normal 28-day cycle, day 14 is when Ovulation occurs
11. Luteinizing hormone (LH, also known as lutropin and sometimes lutrophin) is a hormone produced by gonadotropic cells in the anterior pituitary gland. In females, an acute rise of LH ("LH surge") triggers ovulation and development of the corpus luteum
12. The first meiotic division is coordinated by hormones: follicle stimulating hormone (FSH), estrogen, luteinizing hormone (LH), and progesterone. The oocyte is arrested in cell division prior to the second meiotic division, which only occurs after fertilization.
13. Follicle on the ovary now becomes a temporary gland- Progesterone hormone produced in large quantity . It is responsible for developing and maintaining the uterine lining
14. Follicular phase: This phase begins on the first day of menstrual bleeding (day 1). But the main event in this phase is the development of follicles in the ovaries.At the beginning of the follicular phase, the lining of the uterus (endometrium) is thick with fluids and nutrients designed to nourish an embryo. If no egg has been fertilized, estrogen and progesterone levels are low. As a result, the top layers of the endometrium are shed, and menstrual bleeding occurs.
15. Menopause
16. The menstrual cycle. Day 1 starts with the first day of your period. This occurs after hormone levels drop at the end of the previous cycle, signaling blood and tissues lining the uterus (womb) to break down and shed from the body
17. Prolactin: A Milk-Producing Hormone. Prolactin is a hormone secreted by the pituitary gland which is located at the base of the brain. It circulates in low levels in the bloodstream of non pregnant women. During pregnancy, prolactin levels increase approximately ten-fold and stimulate milk formation. High estrogen and progesterone secretion prevent milk production.
18. Oxytocin
19. Low level of estrogen and progesterone stimulate secretion of PRL
20. Oogenesis is the process by which the female gametes, or ova, are created. The female gamete is called an ovum. The diploid germ cells that have the potential to develop into ova are called oogonia
21. Primary oocyte
22. At the end of meiosis, 4 daughter cells are formed = eggs or sperm. Each contains half as many chromosomes as the parent cell (n); each cell is genetically different from its parents and from its "siblings". Fertilization of an egg by a sperm restores the chromosome number to 2n
23. About this time, the pituitary gland slightly increases its production of follicle-stimulating hormone. This hormone then stimulates the growth of 3 to 30 follicles. Each follicle contains an egg. Later in the phase, as the level of this hormone decreases, only one of these follicles (called the dominant follicle) continues to grow. It soon begins to produce estrogen, and the other stimulated follicles begin to break down. The increasing estrogen also begins to prepare the uterus and stimulates the luteinizing hormone surge.
24. Corpus luteum- Hormone-secreteing glandular structure that is transformed after ovulation from a ruptured follicle; it secretes chiefly progesterone, with some estrogen secreted as well.
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