Identify the vessel indicated by the letter “A”  

Identify the blood vessels at the tip of the arrow labeled “A” in the circle of Willis.                            

Identify the vessel at the tip of the arrow labeled “A”. 

Identify white blood cell in the tissue slide below.  

Identify the blood vessels at the tip of the  arrow labeled “C”.   

Identify the structure indicated by the green arrow.  

Identify the vessels at the tip of the arrows labeled “B”. (Make sure to indicate whether it is the left or right when entering your answer)    

Identify the artery indicated by the arrow labeled “B”

Give a function for the cell on the histology slide below.

What does the electrical signal labeled “C” on the ECG lead to in the cardiac cycle?