10 results
Menstrual Cycle Physiology: Ovarian Cycle – Ovulation Explained

Around Day 14, estrogen exerts sudden +++ positive feedback
Ovarian Cycle – Ovulation ... sudden +++ positive feedback ... for clarity) #MenstrualCycle ... #OvarianCycle #pathophysiology ... #Ovulation #endocrinology
Menstrual Cycle Physiology: Ovarian Cycle – Brief Overview
LH and FSH are required for follicular development and
theca cells • Ovulation ... forms following ovulation ... not implant #MenstrualCycle ... #OvarianCycle #pathophysiology ... #menstruation #endocrinology
Menstrual Cycle Physiology: The Hypothalamic-Pituitary-Ovarian Axis
Estrogen, when released:
 • Negatively feeds back on the hypothalamus and
#MenstrualCycle ... #pathophysiology ... HypothalamicPituitary #endocrinology ... #feedback
Feedback Loop: Prolactin (PRL)
 • PRL levels exhibit diurnal, menstrual, and age-related variation
 • TRH has
Feedback Loop: Prolactin ... #FeedbackLoop #endocrinology ... #pathophysiology
Menstrual Cycle Physiology: Correlating the Ovarian and Uterine Cycles
Note: Some charts show different relative levels of
Ovulation • ... See also "Ovulation ... #UterineCycle #MenstrualCycle ... #OvarianCycle #pathophysiology ... #comparison #endocrinology
Feedback Loop: Growth Hormone (GH)
Growth Hormone:
 • Liver -> GHR activates JAK-STAT pathway -> Incr IGF1
Feedback Loop: Growth ... #FeedbackLoop #endocrinology ... #pathophysiology
Menstrual Cycle Physiology: Ovarian Cycle – Luteal Phase Explained
 • The LH surge can be thought
slide) Besides ovulation ... Ovarian Cycle #MenstrualCycle ... #OvarianCycle #pathophysiology ... #LutealPhase #endocrinology
Calcium homeostasis is a process controlled by chiefly by hormones vitamin D and PTH. 
Vitamin D
classical negative feedback ... #Pathophysiology ... #Endocrinology
Menstrual Cycle Physiology: Ovarian Cycle – Follicular Phase Explained
Early Follicular Phase (Days 0-5)
 • Granulosa cells
preparing for ovulation ... #MenstrualCycle ... #OvarianCycle #pathophysiology ... FollicularPhase #endocrinology
Menstrual Cycle Physiology: the Uterine Cycle
The endometrium has receptors for ovarian hormones! Changes in structure and
fertilized) ovum #MenstrualCycle ... #OvarianCycle #pathophysiology ... #UterineCycle #endocrinology