Taxonomy and the Tree of Life
The science of taxonomy and where humans fit into the tree of life More free lessons at: http://www.khanacademy.org/video?v=oHvLlS_Sc54
Biology by Khan Academy
Species
What a species is and isn't. Ligers, tiglons, mule, hinnies, and dogs More free lessons at: http://www.khanacademy.org/video?v=Tmt4zrDK3dA
Secondary active transport in the nephron | Renal system physiology | NCLEX-RN | Khan Academy
Secondary active transport in the nephron. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/rn-renal-system/rn-renal… Missed the previous lesson?
The kidney and nephron | Renal system physiology | NCLEX-RN | Khan Academy
Overview of how the nephrons in the kidney filter blood and reabsorb water and other molecules. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/rn-renal-system/rn-the-r… Missed the previous lesson?
Inflammatory response | Human anatomy and physiology | Health & Medicine | Khan Academy
Overview of the inflammatory response. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/health-and-medicine/human-anatomy-a… Missed the previous lesson?
Review of B cells, CD4+ T cells and CD8+ T cells | NCLEX-RN | Khan Academy
Review of B cells, CD4+ T cells and CD8+ T cells. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/rn-immune-system/rn-the-… Missed the previous lesson?
Cytotoxic T cells | Immune system physiology | NCLEX-RN | Khan Academy
How cytotoxic T cells get activated by MHC-I/antigen complexes and then proceed to kill infected cells. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/rn-immune-system/rn-the-… Missed the previous lesson?
Helper T cells | Immune system physiology | NCLEX-RN | Khan Academy
Introduction to helper T cells and their role in activating B cells. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/rn-immune-system/rn-the-… Missed the previous lesson?
Professional antigen presenting cells (APC) and MHC II complexes | NCLEX-RN | Khan Academy
How professional antigen presenting cells present parts of engulfed pathogens on MHC II complexes. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/rn-immune-system/rn-the-… Missed the previous lesson?
B lymphocytes (B cells) | Immune system physiology | NCLEX-RN | Khan Academy
Overview of B cells (B lymphocytes) and how they are activated and produce antibodies. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/rn-immune-system/rn-the-… Missed the previous lesson?