Akos Murber - Female endocrine functions - summary
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This document summarizes the female menstrual cycle and the roles of the hypothalamus, pituitary gland, and ovaries. It explains that the hypothalamus produces GnRH, stimulating the pituitary to release LH and FSH, controlling follicular growth and ovulation in the ovaries. The ovaries produce hormones like estrogen and progesterone that provide feedback to the hypothalamus and pituitary. Key events in the ovarian cycle include follicular growth, ovulation, luteal function after the corpus luteum forms, and luteal regression at the end of the cycle.
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Menstrual cycle
The menstrual cycle involves changes in the ovaries and uterus across approximately 28 days. In the ovaries, a follicle grows and matures, culminating in ovulation around day 14 when the mature egg is released. After ovulation, the ruptured follicle transforms into the corpus luteum which secretes progesterone and estrogen to prepare the uterus in case of fertilization. If fertilization does not occur, progesterone and estrogen levels drop and the endometrial lining is shed through menstruation, starting a new cycle.
Chapter 17 Reproduction in Humans Lesson 2 - The Menstrual Cycle
The document summarizes the key events of the human menstrual cycle. It describes how follicles in the ovaries mature and how hormones regulate the cycle. It explains that the ovarian follicle ruptures and releases an egg (ovulation) around day 14. If the egg is not fertilized, hormone levels drop and the uterine lining is shed through menstruation around day 28, starting a new cycle. Oral contraceptives work by inhibiting the hormones FSH and LH to prevent ovulation and therefore pregnancy.
Menstrual cycle
This Slide is based on the details of NCERT in class 12 CBSE.
The topic contains all necessary events of Menstual Cycle.
menstruation and menstrual cycle
The document discusses menstruation and the menstrual cycle. It covers three learning objectives: 1) describing menstruation as the breakdown of the uterine lining, 2) relating menstruation to the menstrual cycle, and 3) stating the hormones involved in the menstrual cycle, including FSH, LH, estrogen, and progesterone. The menstrual cycle involves the development of follicles in the ovaries, ovulation on day 14, and either implantation of a fertilized egg or shedding of the uterine lining if no implantation occurs.
Physiology of the menstrual cycle
The menstrual cycle is regulated by the hypothalamus, pituitary gland, and ovaries. It typically lasts 28 days and is divided into the follicular phase and luteal phase. During the follicular phase, follicles in the ovaries mature under the influence of hormones like FSH. Around day 14, ovulation occurs when a dominant follicle ruptures to release an egg. After ovulation, the ruptured follicle develops into the corpus luteum which secretes progesterone to prepare the uterus for potential implantation. If implantation does not occur, progesterone and estrogen levels fall, causing menstruation and the start of a new cycle.
The menstrual cycle- Mr. panneh
this lecture was presented to the December 2016 Midwifery class of the school for Enrolled Nurses and Midwives- The Gambia.
Ovarian cycle
This document summarizes the female ovarian cycle. It describes the three phases of the ovarian cycle: the follicular phase, where follicles in the ovaries develop under the influence of hormones; the ovulatory phase, where a surge of LH causes ovulation; and the luteal phase, where the corpus luteum forms and secretes progesterone. It also discusses the hormonal control of the cycle by the hypothalamus, pituitary gland, and ovaries. Key events include the monthly development and selection of a single dominant follicle to ovulate while others undergo atresia, as well as the formation and breakdown of the corpus luteum over a typical 28 day cycle.
the menstrual cycle
The document summarizes key aspects of the female menstrual cycle. It begins with menarche typically occurring between ages 10-12 and menopause between 45-55. The menstrual cycle affects the ovaries and endometrium, consisting of follicular and luteal phases in the ovaries and proliferative and secretory phases in the endometrium. The hypothalamic-pituitary-ovarian axis regulates the cycle through hormones like FSH and LH. Ovulation typically occurs around day 14 when the dominant follicle ruptures to release the ovum. If fertilization does not occur, the corpus luteum regresses and menstruation begins, marking the start of a new cycle.
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Menstrual cycle
The menstrual cycle involves changes in the ovaries and uterus across approximately 28 days. In the ovaries, a follicle grows and matures, culminating in ovulation around day 14 when the mature egg is released. After ovulation, the ruptured follicle transforms into the corpus luteum which secretes progesterone and estrogen to prepare the uterus in case of fertilization. If fertilization does not occur, progesterone and estrogen levels drop and the endometrial lining is shed through menstruation, starting a new cycle.
Chapter 17 Reproduction in Humans Lesson 2 - The Menstrual Cycle
The document summarizes the key events of the human menstrual cycle. It describes how follicles in the ovaries mature and how hormones regulate the cycle. It explains that the ovarian follicle ruptures and releases an egg (ovulation) around day 14. If the egg is not fertilized, hormone levels drop and the uterine lining is shed through menstruation around day 28, starting a new cycle. Oral contraceptives work by inhibiting the hormones FSH and LH to prevent ovulation and therefore pregnancy.
Menstrual cycle
This Slide is based on the details of NCERT in class 12 CBSE.
The topic contains all necessary events of Menstual Cycle.
menstruation and menstrual cycle
The document discusses menstruation and the menstrual cycle. It covers three learning objectives: 1) describing menstruation as the breakdown of the uterine lining, 2) relating menstruation to the menstrual cycle, and 3) stating the hormones involved in the menstrual cycle, including FSH, LH, estrogen, and progesterone. The menstrual cycle involves the development of follicles in the ovaries, ovulation on day 14, and either implantation of a fertilized egg or shedding of the uterine lining if no implantation occurs.
Physiology of the menstrual cycle
The menstrual cycle is regulated by the hypothalamus, pituitary gland, and ovaries. It typically lasts 28 days and is divided into the follicular phase and luteal phase. During the follicular phase, follicles in the ovaries mature under the influence of hormones like FSH. Around day 14, ovulation occurs when a dominant follicle ruptures to release an egg. After ovulation, the ruptured follicle develops into the corpus luteum which secretes progesterone to prepare the uterus for potential implantation. If implantation does not occur, progesterone and estrogen levels fall, causing menstruation and the start of a new cycle.
The menstrual cycle- Mr. panneh
this lecture was presented to the December 2016 Midwifery class of the school for Enrolled Nurses and Midwives- The Gambia.
Ovarian cycle
This document summarizes the female ovarian cycle. It describes the three phases of the ovarian cycle: the follicular phase, where follicles in the ovaries develop under the influence of hormones; the ovulatory phase, where a surge of LH causes ovulation; and the luteal phase, where the corpus luteum forms and secretes progesterone. It also discusses the hormonal control of the cycle by the hypothalamus, pituitary gland, and ovaries. Key events include the monthly development and selection of a single dominant follicle to ovulate while others undergo atresia, as well as the formation and breakdown of the corpus luteum over a typical 28 day cycle.
the menstrual cycle
The document summarizes key aspects of the female menstrual cycle. It begins with menarche typically occurring between ages 10-12 and menopause between 45-55. The menstrual cycle affects the ovaries and endometrium, consisting of follicular and luteal phases in the ovaries and proliferative and secretory phases in the endometrium. The hypothalamic-pituitary-ovarian axis regulates the cycle through hormones like FSH and LH. Ovulation typically occurs around day 14 when the dominant follicle ruptures to release the ovum. If fertilization does not occur, the corpus luteum regresses and menstruation begins, marking the start of a new cycle.
murber
This document summarizes the female menstrual cycle and the roles of the hypothalamus, pituitary gland, and ovaries. It explains that the hypothalamus produces GnRH, stimulating the pituitary to release LH and FSH, controlling follicular growth and ovulation in the ovaries. The ovaries produce hormones like estrogen and progesterone that provide feedback to the hypothalamus and pituitary. Key events in the ovarian cycle include follicular growth, ovulation, luteal function after the corpus luteum forms, and luteal regression at the end of the cycle.
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2
The document discusses female reproductive physiology, describing the stages from puberty through menopause. It focuses on the menstrual cycle, explaining the hormonal regulation of the hypothalamic-pituitary-ovarian axis and the cyclic changes that occur in the ovaries and endometrium under the influence of estrogen and progesterone. During the proliferative phase, estrogen stimulates endometrial growth, while the secretory phase is characterized by the effects of progesterone on the endometrium to prepare for potential implantation.
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The document summarizes key aspects of the female reproductive system and endocrinology. It discusses the female phenotype and sex hormones like estrogen, progesterone, FSH and LH. It describes the hypothalamic-pituitary-ovarian axis and how hormones regulate the menstrual cycle and reproduction. Other endocrine glands like the thyroid and their roles in fertility are also mentioned.
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This document summarizes the female menstrual cycle and the roles of the hypothalamus, pituitary gland, and ovaries. It explains that the hypothalamus produces GnRH, stimulating the pituitary to release LH and FSH, controlling follicular growth and ovulation in the ovaries. The ovaries produce hormones like estrogen and progesterone that provide feedback to the hypothalamus and pituitary. Key events in the ovarian cycle include follicular growth, ovulation, luteal function after the corpus luteum forms, and luteal regression at the end of the cycle.
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This document provides information on assisted reproduction including definitions of infertility, prevalence of infertility by age, forms of infertility, causes of female and male infertility, investigation of infertility, treatment of ovulation disorders, and in vitro fertilization and embryotransfer (IVF-ET). Key points include that infertility is defined as no conception after 1 year of regular unprotected intercourse, prevalence increases with female age from 2.1% at age 15-19 to 15.9% at age 40-44, causes of female infertility include ovulatory disorders (40%), anatomical factors (50%), and psychological factors (10%), and IVF-ET involves oocyte retrieval, fertilization in vitro, and embryo transfer.
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Intrauterine growth restriction (IUGR) refers to impaired fetal growth and development due to reduced nutrient supply from the placenta. It affects 3-10% of pregnancies and increases risks of complications. Causes include fetal/genetic factors, maternal conditions, and placental insufficiency. Physical signs include disproportionately large head and wasted appearance. Management involves monitoring with tests like biophysical profile and timely delivery when indicated. Long term risks include increased mortality and morbidity as well as potential adult health issues. Prevention focuses on treating underlying maternal conditions and risk factors.
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The document summarizes the normal postpartum period and changes that occur in the six weeks following childbirth. It discusses involution of the uterus and other organs, hormonal changes, wound healing, breastfeeding, weight loss, and potential complications like mastitis, urinary incontinence, and puerperal fever. Contraception options for breastfeeding mothers and contraindications to breastfeeding are also covered.
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This document discusses factors of care during pregnancy including prenatal care, screenings, diagnosis of pregnancy, initial prenatal visits, assessments, examinations, laboratory tests, nutrition, and preconception counseling. Prenatal care involves medical care and psychosocial support beginning before conception through delivery, with about 12 average visits. Screenings determine gestational age, fetal development and health, and maternal health risks. Initial visits involve assessments, exams, and establishing care plans. Follow up involves continued monitoring of maternal and fetal wellbeing.
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PCOS
Polycystic ovarian syndrome (PCOS) is the most common endocrine disorder in women, affecting around 1 million females in Germany. It is characterized by menstrual irregularities, excess androgen levels, and polycystic ovaries. PCOS causes infertility due to chronic anovulation from hyperandrogenism and insulin resistance. Women with PCOS have an increased risk of obesity, diabetes, cardiovascular disease, and other metabolic complications. The cause of PCOS involves genetic and environmental factors, and its features vary in severity and combination of symptoms between individuals.
Gyula Richard Nagy: Prenatal diagnostic methods
This document discusses prenatal diagnostic methods. It covers several topics:
- The objectives of prenatal diagnosis, which include detecting abnormalities, allowing termination if desired, and providing informed choices to couples.
- Invasive diagnostic methods like amniocentesis and chorionic villus sampling, which allow testing the fetus but carry risks of miscarriage.
- Non-invasive methods like ultrasound and cell-free DNA testing from maternal blood, which do not risk the pregnancy but have limitations.
- The various indications for offering prenatal diagnosis based on factors like advanced maternal age, family history, ultrasound findings, and maternal health issues.
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Female urinary incontinence and genital prolapse affect many women. Common causes include aging, childbirth, and menopause. Symptoms include urinary urgency and leakage. Diagnosis involves medical history, exams, and tests like cystometry. Treatment options include pelvic floor exercises, pessaries, medications, and surgeries like Burch repair, TVT, and vaginal wall repairs. Managing risk factors and treating reversible causes can help address these common women's health issues.
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The document discusses ultrasound screening and testing during pregnancy in Hungary. It recommends five ultrasound examinations - one diagnostic and four screenings - according to guidelines from the Hungarian Society of Ultrasound in Obstetrics and Gynecology (MSZNUT). The screenings have defined protocols and occur at 11-13, 18-20, 30-31, and 36-37 weeks gestation. Different healthcare levels are required depending on the exam, and MSZNUT ensures regular training to meet proficiency standards. Fetal well-being testing like non-stress tests and biophysical profiles may also be used for high-risk pregnancies starting at 32 weeks.
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This document discusses various obstetric operations including induced abortion, forceps delivery, vacuum extraction, and cesarean section. It provides detailed information on the techniques, indications, and complications of each procedure. Induced abortion is described for both the first and second trimester using methods such as D&C, medical induction, and curettage. Forceps delivery techniques include outlet, low, and mid forceps operations. Vacuum extraction is outlined as an alternative to forceps. Cesarean section is indicated when the cervix is not fully dilated or the head is not engaged.
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The document discusses female reproductive physiology, describing the stages from puberty through menopause. It focuses on the menstrual cycle, explaining the hormonal regulation of the hypothalamic-pituitary-ovarian axis and the cyclic changes that occur in the ovaries and endometrium under the influence of estrogen and progesterone. During the proliferative phase, estrogen stimulates endometrial growth, while the secretory phase is characterized by the effects of progesterone on the endometrium to prepare for potential implantation.
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The document summarizes key aspects of the female reproductive system and endocrinology. It discusses the female phenotype and sex hormones like estrogen, progesterone, FSH and LH. It describes the hypothalamic-pituitary-ovarian axis and how hormones regulate the menstrual cycle and reproduction. Other endocrine glands like the thyroid and their roles in fertility are also mentioned.
Menstraul cycle
1. The normal menstrual cycle is tightly regulated by the hypothalamic-pituitary-ovarian axis and results in the maturation and release of a single egg each month.
2. During a cycle, multiple follicles begin growing under the influence of FSH but normally only one follicle becomes dominant and ovulates, releasing an egg.
3. Ovulation is caused by an LH surge near the middle of the cycle which causes the dominant follicle to rupture and forms the corpus luteum.
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The normal menstrual cycle is tightly regulated by the hypothalamic-pituitary-ovarian axis. During a typical 28-day cycle, follicles in the ovaries grow under the influence of FSH and LH from the pituitary. One follicle becomes dominant and further develops, producing estrogen. Rising estrogen levels cause a positive feedback on the hypothalamus and pituitary, triggering an LH surge and ovulation. After ovulation, the ruptured follicle transforms into the corpus luteum which produces progesterone. If implantation does not occur, progesterone levels drop and menstruation begins, marking the start of a new cycle.
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The document summarizes the key phases and hormonal changes of the menstrual cycle. It discusses:
1. The average menstrual cycle is 28 days consisting of the follicular phase, ovulation, and luteal phase regulated by hormones like FSH, LH, estrogen, and progesterone.
2. During the follicular phase, FSH and LH stimulate follicle growth and estrogen production. Near mid-cycle, high estrogen triggers an LH surge and ovulation.
3. In the luteal phase, the corpus luteum produces progesterone to prepare the uterus for potential pregnancy. If no implantation occurs, progesterone levels fall and menstruation begins.
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The anterior pituitary gland regulates several endocrine organs through the release of hormones. It consists of two lobes - the anterior and posterior pituitary. The anterior pituitary releases growth hormone, thyroid stimulating hormone, adrenocorticotropic hormone, follicle stimulating hormone, luteinizing hormone, and prolactin. These hormones work through feedback loops called axes to regulate target endocrine glands. The axes include the growth hormone axis, hypothalamic-pituitary-thyroid axis, hypothalamic-pituitary-gonadal axis, and prolactin axis. The posterior pituitary releases antidiuretic hormone and oxytocin.
Female Endocrine Physiology
The female hormonal system involves interactions between the hypothalamus, anterior pituitary, and ovaries. The hypothalamus releases GnRH, stimulating the anterior pituitary to release FSH and LH, which signal the ovaries to produce estrogen and progesterone. These hormones regulate the development of ovarian follicles and the menstrual cycle in the uterus. Estrogen stimulates uterine growth during the proliferative phase, while progesterone induces secretory changes to prepare the uterus for potential implantation during the luteal phase if fertilization occurs. If implantation does not occur, progesterone and estrogen levels drop and menstruation begins.
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This document provides information about hormone regulation and the menstrual cycle. It discusses the roles of the nervous and endocrine systems in maintaining homeostasis through feedback mechanisms that help coordinate reproductive processes. Specifically, it describes how hormones regulate the female menstrual cycle, which occurs over four stages - the follicular stage, ovulation, luteal stage, and menstruation. It also discusses hormone roles in the male and female reproductive systems and how the nervous and endocrine systems work together to achieve homeostasis.
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Hormonal control of reproduction in male and female mammals
Hormonal control of reproduction in male and female mammals
for LIVE Teaching Q3- System Coordination and Hormonal Changes in the Body.pptx
for LIVE Teaching Q3- System Coordination and Hormonal Changes in the Body.pptx
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CAPNOGRAPHY and CAPNOMETRY/ ETCO2 .pptx
End-tidal carbon dioxide (ETCO2) is the level of carbon dioxide that is released at the end of an exhaled breath. ETCO2 levels reflect the adequacy with which carbon dioxide (CO2) is carried in the blood back to the lungs and exhaled.
Non-invasive methods for ETCO2 measurement include capnometry and capnography. Capnometry provides a numerical value for ETCO2. In contrast, capnography delivers a more comprehensive measurement that is displayed in both graphical (waveform) and numerical form.
Sidestream devices can monitor both intubated and non-intubated patients, while mainstream devices are most often limited to intubated patients.
English Drug and Alcohol Commissioners June 2024.pptx
Presentation made by Mat Southwell to the Harm Reduction Working Group of the English Drug and Alcohol Commissioners. Discuss stimulants, OAMT, NSP coverage and community-led approach to DCRs. Focussing on active drug user perspectives and interests
National Rural Health Mission(NRHM).pptx
This document describes the NRHM Scheme, its goals, objectives, components, and new initiatives.
COLOUR CODING IN THE PERIOPERATIVE NURSING PRACTICE.
COLOUR CODING IN THE PERIOPERATIVE ENVIRONMENT HAS COME TO STAY ,SOME SENCE OF HUMOUR WILL BE APPRECIATED AT THE RIGHT TIME BY THE PATIENT AND OTHER SURGICAL TEAM MEMBERS.
nurs fpx 4050 assessment 4 final care coordination plan.pdf
nurs fpx 4050 assessment 4 final care coordination plan.pdf
PrudentRx: A Resource for Patient Education and Engagement
PrudentRx enhances healthcare by educating patients and ensuring effective medication management in a complex, evolving landscape.
Monopoly PCD Pharma Franchise in Tripura
Our company incorporates various drug formulations covering pharma tablets, syrups, capsules, gels, sachets, ointments, creams, injectables.
一比一原版(USF毕业证)旧金山大学毕业证如何办理
USF毕业证offer【微信95270640】《旧金山大学毕业证购买》《如何办理USF毕业证旧金山大学文凭学历》Q微信95270640实体公司，专业可靠，办理毕业证办美国成绩单,做加拿大文凭学历认证,办新西兰学位证，学位证书是什么?《制作旧金山大学毕业证多少钱》《USF学历证书丢了怎么办理》办澳洲文凭认证，办留信网认证（网上可查，实体公司，专业可靠）
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如果你是以上情况之一请联系我们我们将在第一时间内给你免费咨询相关信息。我们将帮助你整理认证所需的各种材料.帮你解决国外学历认证难题。
国外旧金山大学旧金山大学硕士学位证成绩单办理方法：
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Pneumothorax and role of Physiotherapy in it.
This particular slides consist of- what is Pneumothorax,what are it's causes and it's effect on body, risk factors, symptoms,complications, diagnosis and role of physiotherapy in it.
This slide is very helpful for physiotherapy students and also for other medical and healthcare students.
Here is a summary of Pneumothorax:
Pneumothorax, also known as a collapsed lung, is a condition that occurs when air leaks into the space between the lung and chest wall. This air buildup puts pressure on the lung, preventing it from expanding fully when you breathe. A pneumothorax can cause a complete or partial collapse of the lung.
Hypertension and it's role of physiotherapy in it.
This particular slides consist of- what is hypertension,what are it's causes and it's effect on body, risk factors, symptoms,complications, diagnosis and role of physiotherapy in it.
This slide is very helpful for physiotherapy students and also for other medical and healthcare students.
Here is summary of hypertension -
Hypertension, also known as high blood pressure, is a serious medical condition that occurs when blood pressure in the body's arteries is consistently too high. Blood pressure is the force of blood pushing against the walls of blood vessels as the heart pumps it. Hypertension can increase the risk of heart disease, brain disease, kidney disease, and premature death.
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Gender identity disorder, paraphilias , sexual dysfunction
Unlocking the Secrets to Safe Patient Handling.pdf
Furthermore, the time constraints and workload in healthcare settings can make it challenging for caregivers to prioritise safe patient handling Australia practices, leading to shortcuts and increased risks.
1比1制作(uofm毕业证书)美国密歇根大学毕业证学位证书原版一模一样
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我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
Pediatric Emergency Care for Children | Apollo Hospital
Pediatric Emergency Care for Children | Apollo HospitalApollo 24/7 Adult & Paediatric Emergency Services
At Apollo Hospital, Lucknow, U.P., we provide specialized care for children experiencing dehydration and other symptoms. We also offer NICU & PICU Ambulance Facility Services. Consult our expert today for the best pediatric emergency care.
For More Details:
Map: https://cutt.ly/BwCeflYo
Name: Apollo Hospital
Address: Singar Nagar, LDA Colony, Lucknow, Uttar Pradesh 226012
Phone: 08429021957
Opening Hours: 24X7ilide.info-assessment-of-renal-and-urinary-tract-function-pr_1aae1860e4cff0a4...
Assessment of Renal and Urinary Tract Function
CHAPTER 1 SEMESTER V COMMUNICATION TECHNIQUES FOR CHILDREN.pdf
Here are some key objectives of communication with children:
Build Trust and Security:
Establish a safe and supportive environment where children feel comfortable expressing themselves.
Encourage Expression:
Enable children to articulate their thoughts, feelings, and experiences.
Promote Emotional Understanding:
Help children identify and understand their own emotions and the emotions of others.
Enhance Listening Skills:
Develop children’s ability to listen attentively and respond appropriately.
Foster Positive Relationships:
Strengthen the bond between children and caregivers, peers, and other adults.
Support Learning and Development:
Aid cognitive and language development through engaging and meaningful conversations.
Teach Social Skills:
Encourage polite, respectful, and empathetic interactions with others.
Resolve Conflicts:
Provide tools and guidance for children to handle disagreements constructively.
Encourage Independence:
Support children in making decisions and solving problems on their own.
Provide Reassurance and Comfort:
Offer comfort and understanding during times of distress or uncertainty.
Reinforce Positive Behavior:
Acknowledge and encourage positive actions and behaviors.
Guide and Educate:
Offer clear instructions and explanations to help children understand expectations and learn new concepts.
By focusing on these objectives, communication with children can be both effective and nurturing, supporting their overall growth and well-being.
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PrudentRx: A Resource for Patient Education and Engagement
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Akos Murber - Female endocrine functions - summary
- 1. Ovaries Reproductive tract Other targets Steroids Feedback Hypothalamus GnRH(gonadotrophin releasing hormone) Pituitary LH FSH + (“gonadotrophins”) Menstruation is an external indicator of ovarian events controlled by the hypothalamic- pituitary axis Roles of the ovary 1. Gametes (ova) 2. Hormones MENSTRUATION (oestradiol, progesterone).
- 2. 0 4 8 12 16 20 24 28 Timing events in the menstrual cycle. 2. LH surge Day 1 Menstruation Day 1 LH OVULATION Days before Days after Follicular phase Luteal phase
- 3. 0 4 8 12 16 20 24 28 LH Day 1 Menstruation OVULATION Animated ovarian events Progesterone (and oestradiol) Oestradiol 1. Follicular growth Key events in the ovarian cycle 3. Luteal function 2. Ovulation 4. Luteal regression
- 4. Hypothalamus Pituitary Ovaries GnRH Oestradiol (E2) + _ Oestradiol INHIBIN Small follicles: very dependent on FSH Large follicles: less dependent on FSH FSH Decreased FSH + + Growth factors Oestradiol Insufficient FSH Dominant follicle Increasing negative feedback
- 5. 0 4 8 12 16 20 24 28 Insufficient FSH to keep smaller follicles going – they become atretic. Oestradiol FSH FSH secretion suppressed Dominant follicle(s) can survive
- 6. 0 4 8 12 16 20 24 28 OVULATION Oestradiol Progesterone What maintains the CL? Why does the CL degenerate at the end of the cycle? Follicular phase: Oestradiol domination Luteal phase: Progesterone domination