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Hypothalamic releasing hormones and the pituitary trophic hormones. 

#Hypothalamic #Pituitary #Hormones #Release #Trophic #Anterior #Hypothalamus #Endocrinology
Hypothalamic releasing ... hormones and the pituitary ... #Hypothalamic #Pituitary ... Trophic #Anterior #Hypothalamus
Overview of hypothalamus and pituitary hormones and their regulation.

#hypothalamus #pituitary #endocrinology #Hormones #diagnosis #algorithm
Overview of hypothalamus ... and pituitary hormones ... #hypothalamus #pituitary
Limbic system
Medial/rostral hypothalamus
Lateral hypothalamus
Hypothalamic neurosecretion
ADH
Autonomic centers
Signal generator
CRH
Negative feedback
Sympathetic nervous system
Anterior pituitary
ACTH
Adrenal medulla
Adrenal cortex
#Cortisol
#Epinephrine (norepinephrine)
Response to signal
Medial/rostral hypothalamus ... Lateral hypothalamus ... Hypothalamic neurosecretion ... system Anterior pituitary
Menstrual Cycle Physiology: The Hypothalamic-Pituitary-Ovarian Axis
Estrogen, when released:
 • Negatively feeds back on the hypothalamus and
Physiology: The Hypothalamic-Pituitary-Ovarian ... feeds back on the hypothalamus ... and anterior pituitary ... feeds back on the hypothalamus ... and anterior pituitary
Causes of Primary and Secondary Amenorrhea - Differential Diagnosis Algorithm
Primary Amenorrhea - No onset of menarche
• Central - Hypothalamic ... • Central - Pituitary ... - High FSH • Hypothalamic ... estrogen: • Pituitary ... Prolactin • Pituitary
Inhibin <
Hypothalamus
<
GnRH
④
Anterior pituitary
FSH
LH
V
Sertoli cells
V
Leydig cells
Paracrine
e
e
→ #Testosterone
Inhibin < Hypothalamus ... GnRH ④ Anterior pituitary
Causes of Secondary Amenorrhea - Differential Diagnosis Algorithm
Absence of menses for more than 3 cycles or
, iatrogenic) Hypothalamic ... sarcoidosis) Pituitary ... Prolactin: • Pituitary ... irritation • Hypothalamic-Pituitary ... Hypothyroidism Pituitary
Pituitary Mass Effects - Pathogenesis and Clinical Findings
 • Pituitary turnors are almost always a benign
Pituitary Mass Effects ... Pituitary adenomas ... Symptomatic pituitary ... • For pituitary ... and vomiting • Hypothalamic
Ventromedial nucleus
Dorsomedial nucleus
Arcuate nucleus
Hypothalamus
Supraoptic nucleus
Paraventricular nucleus
RH, IH
ADH
Oxytocin
Superior hypo-physial artery
Axoplasmic transport by neurosecretory nerve cells
Release of RHs,
Arcuate nucleus Hypothalamus ... release of anterior pituitary ... ADH, oxytocin Pituitary ... veins Posterior pituitary ... B-endorphin Posterior pituitary
Weight Gain - Differential Diagnosis Algorithm
Increased Intake
 • Dietary
 • Social/Behavioural
 • Iatrogenic
Decreased Expenditure
 • Sedentary
• Dementia Hypothalamic ... /PituitaryHypothalamic