Reproductive Anatomy, Physiology & the Menstrual Cycle - Concept Map
Reproductive System & Menstrual Cycle: Structure, Hormones, and Fertility
Related concepts
Male Reproductive System
Sub concepts
- Testes and Spermatogenesis
- Accessory Glands
- Sperm Maturation and Delivery
- Testosterone Production
Relationship to central
Produces sperm and testosterone; determines fetal sex
Female Reproductive System
Sub concepts
- External Genitalia (Vulva)
- Internal Organs (Uterus, Vagina, Fallopian Tubes)
- Ovaries and Oocytes
- Bony Pelvis (Obstetric Relevance)
Relationship to central
Produces ova; site of menstruation, coitus, and pregnancy
Reproductive Hormones
Sub concepts
- Hypothalamic-Pituitary Hormones
- Ovarian Hormones
- Placental Hormones
- Positive and Negative Feedback
Relationship to central
Regulate menstrual cycle, ovulation, and fertility
Menstrual Cycle
Sub concepts
- Ovarian Cycle
- Endometrial Cycle
- Signs of Ovulation
- Cycle Variations and Abnormalities
Relationship to central
Cyclical process preparing for pregnancy; averages 28 days
Fertility and Conception
Sub concepts
- Fertilization Process
- Early Embryonic Development
- Implantation
- Infertility and Nursing Support
Relationship to central
Outcome of reproductive system function; basis for family planning
Concept connections
- HypothalamusGnRHSecretes GnRH to initiate reproductive hormone cascade
- GnRHAnterior PituitaryStimulates pituitary to release FSH and LH
- FSHFollicle GrowthStimulates ovarian follicle development in females; supports spermatogenesis in males via Sertoli cells
- LHOvulationLH surge on day 14 triggers follicle rupture and ovum release
- LHTestosteroneLH stimulates Leydig cells to produce testosterone in males
- EstrogenPositive FeedbackRising estrogen at critical threshold triggers LH surge for ovulation
- EstrogenEndometrial ProliferationEstrogen stimulates endometrium to thicken during follicular phase
- Corpus LuteumProgesteroneCorpus luteum secretes progesterone during luteal phase
- ProgesteroneBasal Body TemperatureProgesterone raises BBT by 0.3-0.5°C after ovulation as sign of ovulation
- ProgesteroneSecretory EndometriumProgesterone transforms endometrium into nutrient-rich secretory lining for implantation
- hCGCorpus Luteum MaintenancehCG from trophoblast maintains corpus luteum to continue progesterone production in pregnancy
- OvulationFertilization WindowOvum viable 24 hours; sperm viable 48-72 hours creates fertile window of approximately 5 days
- FertilizationAmpullaFertilization occurs in the ampulla (outer third) of fallopian tube
- ZygoteEarly DevelopmentZygote undergoes cleavage, morula formation, and blastocyst development over 3-4 days
- BlastocystImplantationBlastocyst implants in endometrium 6-10 days after fertilization
- SpermatogenesisScrotal TemperatureScrotum maintains temperature 1-2°C below core body temperature, essential for normal sperm production
- SpermatogenesisDurationComplete spermatogenesis takes 64-74 days from spermatogonium to mature sperm
- SpermSex DeterminationEach sperm carries either X or Y chromosome; father determines fetal sex through sperm contribution
- SemenAccessory GlandsSeminal vesicles, prostate, and bulbourethral glands contribute secretions to semen
- Cervical MucusSpinnbarkeitEstrogen makes cervical mucus thin, clear, stretchy and permeable to sperm around ovulation
- Vaginal pHAcidic EnvironmentVaginal pH 3.5-4.5 maintained by Döderlein's lactobacilli protects against infection
- Uterine MyometriumLaborMyometrial muscle contracts during labor; contractions also clamp blood vessels to control postpartum bleeding
- Bony PelvisBirth CanalTrue pelvis forms birth canal; pelvic measurements determine capacity for vaginal delivery
- Gynecoid PelvisVaginal DeliveryGynecoid pelvis shape with rounded inlet most favorable for vaginal delivery
- Pelvic ConjugatesFetal Head PassageDiagonal conjugate (~12.5 cm) and true obstetric conjugate (~11 cm) estimate fetal head passage capacity
- Menstrual CycleFollicular PhaseFollicular phase (days 1-13) is variable length portion of ovarian cycle
- Menstrual CycleLuteal PhaseLuteal phase (days 15-28) is fixed ~14 days; cycle variation comes from follicular phase
- InfertilityDefinitionInability to conceive after 12 months (or 6 months if woman >35 years) of regular unprotected intercourse
- DysmenorrheaPrimary TypePrimary dysmenorrhea has no pathology; caused by prostaglandins; management includes NSAIDs and heat
- Nursing EducationNormal Cycle ParametersTeaching normal cycle length 21-35 days, flow 2-7 days, and blood loss 30-80 mL helps women recognize abnormalities
- Fertility AwarenessContraception and ConceptionSame physiological knowledge of fertile window applies whether planning or avoiding pregnancy
Diagrams
Reproductive Anatomy, Physiology & Menstrual Cycle: Complete Concept Hierarchy
Comprehensive mind map displaying the complete hierarchy of reproductive anatomy, physiology, and menstrual cycle concepts. Shows how male and female systems, hormones, cycle phases, and fertility interconnect as a unified reproductive system. This map serves as the central organizational structure for all concepts in the chapter.
Menstrual Cycle: Integrated Hormonal Regulation and Endometrial Changes
Flowchart illustrating the integrated hormonal regulation of the menstrual cycle and corresponding endometrial changes. Shows decision points where hormone levels determine cycle progression, including the critical LH surge that triggers ovulation and the role of hCG in maintaining pregnancy. Emphasizes the cyclical nature and the two possible outcomes: pregnancy or menstruation.
Spermatogenesis: Production and Maturation of Sperm
Flowchart detailing spermatogenesis from initiation in the hypothalamus through final ejaculation. Shows the parallel roles of FSH (supporting spermatocyte development via Sertoli cells) and LH (stimulating testosterone from Leydig cells). Illustrates the complete journey of sperm maturation in the seminiferous tubules, epididymis, and vas deferens, culminating in ejaculation with normal semen volume and sperm count.
Fertilization to Implantation: Early Embryonic Development Timeline
Timeline flowchart showing the critical events from ovulation through successful implantation. Illustrates the 24-hour window for fertilization, the progression through cleavage and morula stages, blastocyst formation and transport, and the window for implantation (days 6-10). Highlights the key transition point where hCG is secreted and pregnancy is established. Also shows the alternative pathway when fertilization does not occur, leading to menstruation.
Hormone Feedback Regulation: Estrogen Positive and Negative Feedback
Flowchart demonstrating the dual feedback mechanisms regulating the menstrual cycle. Shows how low-to-moderate estrogen exerts negative feedback (suppressing FSH/LH for steady follicle development) while a critical estrogen threshold triggers positive feedback (LH surge and ovulation). Illustrates the luteal phase where progesterone provides negative feedback to prevent new follicle development. Shows the critical decision point where hCG presence maintains pregnancy versus its absence leading to corpus luteum regression and menstruation.
Menstrual Cycle States: Transitions and Duration
State diagram showing the four main phases of the menstrual cycle as distinct states with transitions, durations, and hormonal characteristics. Illustrates the normal cyclical progression from menstruation through proliferative, ovulatory, and secretory phases, with a critical decision point at the end where the presence of hCG determines whether pregnancy is established (cycle halts) or menstruation recurs (new cycle begins). Emphasizes that the luteal phase is remarkably constant at 14 days while follicular phase length varies.
Female Reproductive Anatomy: Pathway of Ovum and Sperm
Flowchart depicting the anatomical pathways and structures through which gametes travel and pregnancy develops. Shows the dual pathways of the ovum (ovary to fallopian tube to uterus to endometrium) and sperm (vagina through cervix to fallopian tube). Displays the three layers of the uterus and their functions, the components of the bony pelvis, and critical obstetric measurements (diagonal and true conjugate). Emphasizes key anatomical features relevant to reproduction and childbirth.
Male Reproductive System: Testosterone and Sperm Production Pathway
Flowchart illustrating the complete male reproductive pathway from hypothalamic-pituitary hormonal signals through spermatogenesis, sperm maturation, and ejaculation. Shows the dual roles of LH (stimulating testosterone from Leydig cells) and FSH (supporting spermatocyte development via Sertoli cells). Depicts accessory gland secretions that comprise semen and their functions (nutrition, pH neutralization, motility enhancement). Emphasizes critical factors like scrotal temperature and the genetic determination of fetal sex (paternal contribution via X or Y sperm).