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Endocrine · USMLE Step 1

USMLE Endocrine High-Yield Rapid Review

A condensed rapid review pass over the highest yield endocrine hormone axis and pathology facts for final week review.

40 cards · basic cards · AI-written, checked twice. Edit anything.

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Which hypothalamic hormone stimulates ACTH release from the anterior pituitary?
CRH (corticotropin-releasing hormone)
TRH from the hypothalamus stimulates release of which two anterior pituitary hormones?
TSH and prolactin
What is the primary inhibitor of prolactin secretion?
Dopamine
What is the core pathophysiology of type 2 diabetes mellitus?
Insulin resistance combined with a relative insulin deficiency
Growth hormone's growth-promoting effects on bone and tissue are mediated mainly through ____, produced by the liver.
IGF-1
Where does ADH (vasopressin) act in the kidney, and what is its effect?
The collecting duct; it increases water reabsorption
What is the core pathophysiology of type 1 diabetes mellitus?
Autoimmune destruction of pancreatic beta cells
What are the classic lab findings in SIADH?
Hyponatremia with inappropriately concentrated urine in a euvolemic patient
How do central and nephrogenic diabetes insipidus differ in their response to desmopressin?
Central DI responds (urine concentrates); nephrogenic DI does not respond
What is the TSH level in primary hyperthyroidism?
Low (suppressed)
What is the TSH level in primary hypothyroidism?
High (elevated)
Which autoantibody is responsible for Graves disease?
TSH receptor-stimulating antibody (TSI)
Which two autoantibodies are classically associated with Hashimoto thyroiditis?
Anti-thyroid peroxidase (anti-TPO) and anti-thyroglobulin antibodies
What is the most common cause of hypothyroidism worldwide?
Iodine deficiency
What is the most common cause of hypothyroidism in iodine-sufficient (developed) countries?
Hashimoto thyroiditis

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