Is blood transported toward or away from the heart by the vessel marked “A”?  

Identify this tissue. (Be specific) :  

Name one of the hormones produced by the ‘islets of langerhans’ in the organ labeled ‘A’  

Identify the structure labeled ‘A’ that resulted from fetal circulation.  

Identify chamber “B”    

Identify the blue vessel labeled ‘A’ (indicate if it is left or right).  

Identify the glands labeled ‘A’    

Identify the valve labeled ‘A’ (be specific)  

Which of the following is true regarding B cells?

Match the following precipitation methods with their principle. Each description will be used only once.