Health and medicine | Science | Khan Academy
The medical world can be a confusing place. Patients, their families, and even students entering health fields might feel overwhelmed by the large vocabularies and complicated explanations. We hope to make understanding the medical world a bit easier. Look around! These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have read or seen in any Khan Academy video.

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Introduction
Khan Academy: Health and Medicine Curriculum
This page serves as a comprehensive educational index for human biology and medical science. Note: These resources are for educational purposes and are not a substitute for professional medical advice, diagnosis, or treatment.
Core Body Systems Covered
- Circulatory System: Includes heart anatomy, blood flow, blood pressure regulation, cardiac electrical systems, and hemodynamics.
- Respiratory System: Covers lung structure, gas exchange, and various pulmonary diseases (e.g., asthma, COPD, pneumonia, lung cancer).
- Hematologic System: Focuses on blood cells, hemoglobin, anemia, leukemia, and hemostasis.
- Endocrine System: Explores hormones, the hypothalamus/pituitary axis, and diabetes mellitus.
- Nervous System: Covers the biological basis of behavior and neurological functions.
- Gastrointestinal System: Overview of digestive processes and anatomy.
- Musculoskeletal System: Overview of structural anatomy.
- Reproductive System: Covers anatomy, spermatogenesis, the ovarian cycle, and lactation.
- Immunologic System: Details innate vs. adaptive immunity, B and T cells, inflammatory responses, and antigen presentation.
- Urinary System: Focuses on kidney function, nephron anatomy, glomerular filtration, and fluid regulation.
- Integumentary System: Covers skin anatomy (epidermis/dermis), glands, sensation, and thermoregulation.
Specialized Medical Topics
- Heart Disease: Detailed modules on coronary artery disease, atherosclerosis, heart attacks (myocardial infarction), and heart failure.
- Cardiac Dysrhythmias: Covers EKG interpretation, atrial fibrillation, ventricular tachycardia, and treatment via pacemakers or ablation.
- Valvular Heart Disease: Identification of murmurs, stenosis, and regurgitation.
- Congenital Heart Defects: Distinctions between acyanotic and cyanotic heart diseases (e.g., Tetralogy of Fallot).
- Shock: Hemodynamics, oxygen metabolism, and types of shock (septic, hypovolemic, neurogenic, anaphylactic, etc.).
- Stroke: Identification (FAST), diagnosis (imaging/labs), and acute management.
- Hypertension: Causes, stages, physiological effects on organs, and lifestyle management.
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