The ___________________  serve(s) the heart muscle itself by bringing oxygen-rich blood and nutrients to heart cells.

 Which statement is NOT true of the B cells? 

 The portion of the kidney which is continuous with the ureter is the 

_______________ is defined as the dynamic constancy of the internal environment.

Celiac disease is a/an __________________ disease.

  Babies generally appear to be immune to diseases for approximately the first six months of life. After this, they develop more diseases. What could be responsible for this immunity?  

 The tube that transports urine from the kidney to the urinary bladder is the 

Vessels called _____________ play an important role in homeostasis because an exchange of subtances takes place across their thin walls.

The AIDS virus attacks 

 Which structure in Figure 14.1 stores food, has limited digestion, and secretes HCl?