Why do blood types matter? - Natalie S. Hodge
the ABO blood classification system (article)
what is the lymphatic system? (video series)
blood vessels: form and function (video)
arteries vs veins (video)
diastolic vs systolic blood pressure (video)
how to measure blood pressure (video)
what is high blood pressure? (article)
how our kidneys clean our blood (video)
blood supply to brain (The Noted Anatomist - lots of detailed videos!)
what is muscle tissue? (textbook chapter and quiz)
labels of human muscle (diagram)
how do muscles contract? (video)
what tells the heart to beat? (article)