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USMLE/1
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Textbook
1. Anatomy
2. Microbiology
3. Physiology
3.1 Nervous system and special senses
3.2 Cardiovascular system
3.3 Respiratory system
3.4 Gastrointestinal system
3.5 Renal and urinary system
3.6 Endocrine system
3.6.1 Overview
3.6.2 Pituitary hormones
3.6.3 Thyroid hormones (TH)
3.6.4 Pancreatic hormones
3.6.5 Adrenal hormones
3.6.6 Calcium homeostasis
3.6.7 Erythropoietin
3.6.8 Additional information
3.7 Reproductive system
4. Pathology
5. Pharmacology
6. Immunology
7. Biochemistry
8. Cell and molecular biology
9. Biostatistics and epidemiology
10. Genetics
11. Behavioral science
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3.6.1 Overview
Achievable USMLE/1
3. Physiology
3.6. Endocrine system

Overview

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Classically, a hormone is defined as a chemical substance secreted into the bloodstream that acts on distant tissues, usually in a regulatory fashion. Hormones act as messengers and regulators and have been found to act in an endocrine, paracrine and autocrine fashion. Most endocrine hormones are peptides, with the following exceptions:

Non-peptide endocrine hormones

Type Hormone
Amines T3 and T4, dopamine, NE and epinephrine
Steroids Cortisol, aldosterone, DHEA, androstenedione, testosterone, estradiol, progesterone, Vit D
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