Which organ is responsible for pumping blood throughout the body?

Which organ system is responsible for the production of hormones?

How many domains are used in the modern classification system?

What contribution did Elizabeth Bugie make to microbiology?

 Fungi contribute to ecosystems primarily by:

Extra credit:  Outline blood flow through the pulmonary circuit.

What sphincter is this? What is its function?

Label these vessels.

Label these structures

What is the name of the hexagonal cells in the liver? Name the structures circled or arrowed.