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Introduction to hematologic system

12 videos
Roughly 5 L of blood fill your arteries, veins, capillaries, and venules. What’s it good for you ask? It carries oxygen to help your cells carry out respiration in addition to a number of other substances like lipids and hormones throughout the body. In cases of blood loss, such as trauma situations, the physician must be wary of the different blood types. We will explore the intricacies of the hematologic system here.

What's inside of blood?

VIDEO 11:09 minutes
Spin down your blood and find out what it's made up of. Rishi is a pediatric infectious disease physician and works at Khan Academy.

Red blood cells

VIDEO 16:30 minutes
Oxygen uptake by hemoglobin in red blood cells

Blood types

VIDEO 8:53 minutes

Blood cell lineages

VIDEO 8:04 minutes

Hemoglobin

VIDEO 14:34 minutes
Hemoglobin and its role in the circulatory system

Hemoglobin moves O2 and CO2

VIDEO 14:58 minutes
Learn the two ways that oxygen moves from the lungs to the tissues, and the three ways that carbon dioxide returns from the tissues to the lungs. Rishi is a pediatric infectious disease physician and works at Khan Academy.

Fetal hemoglobin and hematocrit

VIDEO 14:32 minutes
Although mom controls the oxygen source, the fetus has a couple of clever tricks to get the most oxygen possible! Rishi is a pediatric infectious disease physician and works at Khan Academy.

Oxygen content

VIDEO 11:13 minutes
Learn how oxygen content (CaO2) is related to Hemoglobin concentration (Hb), oxygen saturation (SaO2), and the partial pressure of oxygen (PaO2). Rishi is a pediatric infectious disease physician and works at Khan Academy.

Coagulation cascade

VIDEO 14:39 minutes

Bohr effect vs. Haldane effect

VIDEO 13:53 minutes
Take a close look at how some friendly competition for Hemoglobin allows the body to more efficiently move oxygen and carbon Dioxide around. Rishi is a pediatric infectious disease physician and works at Khan Academy.