CHAPTER ONE INTRODUCTION 1.0 BACKGROUND OF THE STUDY Menstrual cycle is a process experienced by every female at one point in their life cycle. In the olden days a young lady experiences her first menstruation in her late teens or early twenties. In recent times‚ however‚ some begin their menstrual cycle as early as nine years. The age at menarche (the first time a girl or a young woman menstruates) is widely considered as an important landmark in sexual maturity. However it varies widely between
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Menstrual Cycle Assignment 1a) X = FSH (follicle stimulating hormone) Z= LH (luteinizing hormone) 1b) W=Estrogen‚ Z= progesterone 1c) W + Z (Estrogen and progesterone) display negative feedback loops 2d) See separate sheet 2e) 14th day of cycle = ovulation day 2f) Temperature remains somewhat constant‚ but it reaches 38.4 degrees Celsius at ovulation and then gradually decreases during the rest of the menstrual cycle until menses (some exceptions apply). 2g) If no corpus luteum exists then
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The menstrual cycle is a cyclic process in females that‚ on average‚ occurs every 28 days. The purpose of the menstrual cycle is to help prepare the body for potential fertilization‚ implantation‚ and‚ consequently‚ pregnancy. The happenings of the menstrual cycle are consequences of the simultaneously occurring ovarian cycle and uterine cycle. The ovarian cycle occurs in the ovaries and carries out the follicular phase‚ which spans the first 14 days of a new menstrual cycle. The result is ovulation
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4Action of hormones in the Menstrual Cycle The Ovarian Cycle The cycle begins with the release from the hypothalamus of gonadotrophin – releasing hormone (GnRH)‚ which stimulates the pituitary to secrete small amounts of Follicle Stimulating Hormone (FSH) and Luteinising Hormone (LH). The FSH stimulates follicle growth‚ aided by LH and the cells of the growing follicles start to make estrogen. Notice in figure(d) that there is a slow rise in the amount of estrogen
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events by which oogonia are transformed into mature oocytes • This maturation process begins before birth and is completed after puberty • Oogenesis continues to menopause‚ which is permanent cessation of the menses (bleeding associated with the menstrual cycles) 2 maturation processes of oocytes are involved; Prenatal maturation Postnatal maturation Prenatal Maturation of Oocytes • Primordial germ cells (46‚ 2N) migrate from the wall of the yolk sac and arrive in the ovary at 5th week and differentiate
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with puberty. There are some girls that can’t wait to start their periods. However‚ others may feel intimidated or anxious. In-fact‚ many girls don’t have complete knowledge of the woman’s reproductive system or what actually happens during the menstrual cycle. As a result‚ this can make the process seem even more mysterious. At 11 years old‚ I recall
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When little girls are in the process of growing into women‚ there are certain changes that take place. The first major change that will take place is puberty. Puberty is a stage in life when girls will begin to mature both mentally and physically. The physical aspect of maturation will be changes of your body‚ such as‚ growing breast‚ growing body hair‚ widening of hips‚ perspiration‚ weight and height gain. Puberty takes place at different times for different people‚ and takes longer for some than
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or around the lung or brain. Endometrial implants‚ while they can cause problems‚ are benign (Stoppler‚ 2011). In endometriosis‚ displaced endometrial tissue continues to act as it normally would: It thickens‚ breaks down and bleeds with each menstrual cycle. And because this displaced tissue has no way to exit your body‚ it becomes trapped. Surrounding tissue can become irritated‚ eventually developing scar tissue and adhesions‚ which is the abnormal tissue that binds organs together (Staff‚ 2010)
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Lab Exercise 8.5.1 Hormone Levels During The Menstrual Cycle a) WX represents the hormones‚ which stimulate the follicle‚ FSH‚ and YZ represents the thickening of the corpus luteum‚ done by LH‚ which produces progesterone (Y). b) The ovarian hormones released by WX is estrogen and progesterone is released by YZ. c) Estrogen and progesterone exert negative feedback effects. d) See attached graph. e) See attached graph. f) Before ovulation the temperature slowly decreases and
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The first thing I did was to stop drinking coffee or any caffineated drink two days before the start of my menstrual cycle. Guess what‚ it worked. The cramps were not as bad as they were when I was drinking coffee. To see if it was the coffee or just not so bad a month‚ I drank one cup of coffee during my cycle and the pain was horrible. So for me the pain drops a good 50% if I just stay away from the caffiene (THIS INCLUDES CHOCOLATE). Now I’m not saying cutting out my cup of coffee for five
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