How does the morphology of the respiratory tract change as primary bronchi shift to terminal bronchioles?

What are the large circular structures in the mucosa on Image A?

Which uterine layer is shed during menstruation?

What urinary structure is shown in image A?

Which epithelium lines the bladder, as shown in the micrograph?

Match the nephron structure below with the epithelium that lines its lumen.

What is indicated by the blue arrow in the micrograph?

Match the digestive structure below with the appropriate micrograph above.

The adventitia of large arteries and veins have a unique feature identified on the micrograph below with blue ovals. What are these structures and what purpose do they serve?  

Match the nephron structure below with its corresponding number on the image.