Name this pinched groove.

Name the most specific cavity that contains this.

  There are 2 knobs at the pointer. Name the larger of the two.

Name this cloudy liquid.

This model is cut along two planes. Which plane is indicated by the arrow?

Name this organ (thin white tube), and name the organ system(s) it belongs to.

When the scanning lens is engaged on the microscope, what is the total magnification?

Name this general part of the cell cycle, seen in both of these cells.

In 1492 the Americas were sparsely populated.

The death toll of the Black Death was incredibly high throughout western Eurasia because the population there had no immunity to the disease.