316 results
Menstrual Cycle Physiology: Ovarian Cycle – Ovulation Explained

Around Day 14, estrogen exerts sudden +++ positive feedback
sudden +++ positive feedback ... negative to positive feedback ... pathophysiology #Ovulation #endocrinology
Feedback Loop: Prolactin (PRL)
 • PRL levels exhibit diurnal, menstrual, and age-related variation
 • TRH has
Feedback Loop: Prolactin ... #FeedbackLoop #endocrinology
Feedback Loop: Growth Hormone (GH)
Growth Hormone:
 • Liver -> GHR activates JAK-STAT pathway -> Incr IGF1
Feedback Loop: Growth ... #FeedbackLoop #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: The Hypothalamic-Pituitary-Ovarian Axis
Estrogen, when released:
 • Negatively feeds back on the hypothalamus and
HypothalamicPituitary #endocrinology ... #feedback
Primary Adrenal Insufficiency:
 • ACTH stimulation test - Synthetic ACTH does not stimulate cortisol secretion because
Elevated, because feedback ... diagnosis #testing #endocrinology
Regulation of GFR
Physiologically, GFR is auto-regulated very precisely with changes in the mean arterial pressure (MAP)
neuro-hormonal feedback ... Tubuloglomerular feedback ... Neuro-hormonal feedback
Causes of Hypercalcemia

#Differential #Hypercalcemia #Diagnosis #Causes #Endocrinology
Diagnosis #Causes #Endocrinology
A1C and eAG
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*For Educational Purposes Only*

#Diabetes #T2D #DM2 #Table #PrimaryCare #Endocrinology #BloodGlucose #A1C
#PrimaryCare #Endocrinology
Features of hyperthyroidism and hypothyroidism

#hyperthyroidism #hypothyroidism #features #signs #symptoms #endocrinology
signs #symptoms #endocrinology