At age 7, Juan was exposed to the chicken pox virus and was ill for 2 weeks.  At age 17, he was again exposed to the virus, but this time he did not become ill.  Which defensive cells were responsible for sustaining his long-lasting immunity to this virus?

The coronary arteries receive blood from 

The class of immunoglobulin associated with Rh incompatability between an Rh- mother and an Rh+ baby.

Which of the following processes is anabolic:

On the Ides of March 44 BCE, the Roman dictator Julius Caesar was stabbed some 23 times by a group of conspirators including the oft mentioned Brutus. Supposedly the fatal wound was one that pierced his heart. Which of the following structures would have been pierced first as the dagger was plunged into Caesar’s chest?

What is the opening to the larynx called?

All of the following are examples of innate (nonspecific) defenses EXCEPT

At age 7, Juan was exposed to the chicken pox virus and was ill for 2 weeks.  At age 17, he was again exposed to the virus, but this time he did not become ill.  Which defensive cells were responsible for sustaining his long-lasting immunity to this virus?

Which of the following is TRUE of the inflammatory response:

Atrioventricular valves are closed by