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?

Identify the blood type on test #4 for the person named Tom

Which vessel has thinner, collapsible walls A, B or C?

Identify the vessel at tip of the green arrows    

Which blood vessel is at the tip of the black arrow in the image below?    

Identify the vein labeled  “A”.     

Select where you can find sources for your research.  Choose all that apply.

Please enter you answer choice for question number 21.

Identify the blood vessel indicated by the arrow.