True or false.  As the passages branch in the respiratory system, I would expect the amount of smooth muscle to increase.

       Refer to the image above. 1. Name the region at the end of “B.”.[a] 2. Name the FUNCTION.[b]

   Refer to the image above.  Which of the following is TRUE?

   Refer to the image above. 1. Name the cell type at the end of “A.”[a] 2. Name the function of this entire structure.[b]

True or false.  White pulp is loaded with macrophages and Langerhan’s cells.

1. Describe the direction of the movement of blood.[a] 2. True or false. Central vein drains into the inferior vena cava.[b]

Refer to the image above. 1. Name the structure at the end of “B.”[a] 2. Name the contents of this structure.[b]

   1. Name the disease.[a] 2. True or false. This disease is commonly caused by the common cold. [b]

Which of the following is a part of the upper respiratory tract?

   Refer to the image above. 1. Name the region within the small intestine.[a] 2. Name the ENTIRE structure at the end of “A.”[b]  (Not cell type)