Khan Academy: 2757 products
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
check_box_outline_blank
Health and medicine: Primary hemostasis
During primary hemostasis, a platelet plug is formed to rapidly stop the initial bleeding after injury. Learn about the different steps inv…
VideoFree11 minutes
check_box_outline_blank
Health and medicine: Polyarteritis nodosa
Polyarteritis nodosa is a type of vasculitis that affects small to medium arteries and leads to significant narrowing of the vasculature. P…
VideoFree12 minutes
check_box_outline_blank
Health and medicine: Hypertension symptoms and categories
Learn the most common symptoms (or lack thereof!) and the two major categories of hypertension. Rishi is a pediatric infectious disease phy…
VideoFree8 minutes
check_box_outline_blank
Health and medicine: Changing glomerular filtration rate
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree4 minutes
check_box_outline_blank
Health and medicine: Anatomy of the male reproductive system
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree10 minutes
check_box_outline_blank
Class 12 Physics (India): Current due to closing a switch: worked example
Find the current due to closing a switch using equivalent resistance and Ohm's law. Class 12 Physics (India) It is now time to dive deeper …
VideoFree3
check_box_outline_blank
Class 11 Physics (India): Worked example: motion problems (with definite integrals)
What can you say about the velocity and position of a particle given its acceleration. Class 11 Physics (India) Let's learn, practice, and …
VideoFree9
check_box_outline_blank
Health and medicine: Frank-Starling mechanism
Carefully follow 5 different preload scenarios to see how each one will have a different effect on how actin and myosin line up. Rishi is a…
VideoFree14 minutes
check_box_outline_blank
Health and medicine: Primary and Secondary TB
Learn some key features of primary TB and how it differs from secondary TB. Rishi is a pediatric infectious disease physician and works at …
VideoFree10 minutes
check_box_outline_blank
Health and medicine: Cerebral blood supply: Part 2
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree5 minutes
check_box_outline_blank
Class 10 Physics (India): Convex & concave mirror ray diagrams
Let's explore the ray tracing technique to figure out the properties of images when things are kept in front of a concave or a convex mirro…
VideoFree13
check_box_outline_blank
Health and medicine: Learn how a stethoscope can help determine blood pressure
Learn how Dr. Korotkoff cleverly used a stethoscope to determine blood pressure, and that we still use his trick today! Rishi is a pediatri…
VideoFree5 minutes
check_box_outline_blank
Health and medicine: What is bronchiolitis?
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree8 minutes
check_box_outline_blank
Health and medicine: Drug dependence and homeostasis
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree3 minutes
check_box_outline_blank
Class 11 Physics (India): Calculating relative velocity
How do we calculate the velocity of one object as seen by another object? In this video, we will intuitively figure out how to calculate re…
VideoFree10