All About the Menstrual Cycle PowerPoint Presentation

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Description : Download free medical presentation titled “All About the Menstrual Cycle”. Learn terms like sex hormones, menopause, ovulation etc. in this female menstrual cycle medical presentation.

Tags : sex hormones, Menopause, Ovulation, Menstrual Cycle, Menstrual Cycle medical presentation, download free medical presentations, medical presentations, medicpresents.com, Infant Oral Health Care

Published on : Jan 21, 2017 | Views : 351 | Downloads : 0

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Slide 1-

All About the Menstrual Cycle
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Biology and the Menstrual Cycle • Menstrual cycle is regulated by fluctuating levels of sex hormones These hormones produce certain changes in the ovaries and uterus Humans are nearly unique among species in having a menstrual cycle Other species of mammals have estrous cycles
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Basic terms Endometrium: Lining of the uterus Oocyte: Developing reproductive cell Ovum: Mature egg after meiosis Menopause: Last menstrual cycle, afterwhich egg production stops
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4 phases of menstrual cycle Menstrual flow Proliferative Ovulation Luteal
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During which days of the cycle is FSH at its lowest? FSH: follicle stimulating hormones is at its lowest during the last days of the cycle
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When FSH levels are low what is the size of the follicle It is shrinking and disappearing while a new set is growing
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What is happening to estrogen during the follicle phase? It dips then rises In response the uterus lining dips then rises
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Ovulation Day 14 of the cycle usually marks an event called ovulation follicle ruptures open and releases the ripened egg Pituitary hormones: LH and FSH are peaking Estrogen is also released from follicle
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Hormones and What Happens in the Ovaries • Luteal phase - after releasing an egg, the follicle turns into the corpus luteum – The corpus luteum manufactures progesterone • Menstruation - shedding of the inner lining of the uterus
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Length and Timing of the Cycle Normal menstrual cycle = 20 to 36 to 40 days; average is about 28 days – Menstruation begins on day 1 and continues until about day 4 or 5 – Follicular phase extends from about day 5 to about day 13 – Ovulation occurs on day 14 – Luteal phase extends from day 15 to the end of the cycle, day 28
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Other Cyclic Changes Two other physiological processes fluctuate with the menstrual cycle: – The cervical mucus cycle – The basal body temperature cycle
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Fluctuations in Performance • Research on intellectual or athletic performance generally shows no fluctuations over the cycle • Research on academic performance, problem solving, memory, or creative thinking shows no fluctuations over the cycle
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What Causes the Fluctuations in Mood Biological factors – Fluctuations in levels of hormones • Environmental factors – Menstrual taboos and cultural expectations
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Thank You!

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