Identify the layer labeled “D”  

Which heart valve is auscultated (heard) at the arrow  labeled “A”?                                            

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

Identify the vessel indicated by the letter “B”  

Identify the blood vessel indicated by the arrow labeled “B”.  

Identify the chamber indicated by arrow labeled “A”. (be specific)    

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

Label “C” in the diagram below.      

Which ECG wave is represented by the letter “A”.  

Name the cavity labeled “E”