Khan Academy
Khan Academy: Circulatory System Questions
This is a ten-question quiz on the Circulatory system.
Khan Academy
Khan Academy: The Effects of High Blood Pressure on the Heart
Read this passage and study the chart to complete a five-question quiz concerning the circulatory system.
Khan Academy
Khan Academy: Chronic Myelogenous Leukemia and the Philadelphia Chromosome
Read this passage and study the graphic to complete the five-question quiz related to the Chronic myelogenous leukemia and Philadelphia Chromosome.
Treehut
Suzy's World: Heart
Find out why your heart beats and perform an experiment to see your pulse moving.