Cells to systems > blood

These procedures involve taking samples of students’ blood for study. Check if your employer has made it a requirement to obtain parental permission (Note 1). Two investigations follow – staining blood to see the variety of cells in a sample, and investigating the osmotic balance of red blood cells by treating the sample with concentrated sodium chloride

Take rings of artery and vein tissue. Load and unload with 10 g masses and hence assess differences in elasticity. Consider how the elastic properties suit the different functions of artery and vein in the circulatory system.