What is shown here by the black arrow?
Author: Anonymous
What space is the black arrow pointing to?
What space is the black arrow pointing to?
What is the black arrow pointing at?
What is the black arrow pointing at?
What blood type is shown?
What blood type is shown?
What structure is the black arrow pointing at?
What structure is the black arrow pointing at?
What is the name of the structure pointed at by the back arr…
What is the name of the structure pointed at by the back arrow?
What valve is pointed at by the black arrow?
What valve is pointed at by the black arrow?
Name the structure indicated by the blue arrow.
Name the structure indicated by the blue arrow.
What are these two white blood cells called?
What are these two white blood cells called?
What is the black arrow pointing at?
What is the black arrow pointing at?