Stimulation of the renin- angiotensin system increases blood volume and blood pressure because it ________.  

An increase in peripheral resistance will be caused by all of the following except:    

The layer of a blood vessel that is in direct contact with the blood is the _____________ , while the layer of the vessel that is made up of smooth muscle is ___________ .  

Natural killer (NK) cells destroy target cells by   

Which anti-microbial substances when activated in a cascade, release fragments that promote cytolysis, phagocytosis and inflammation?  

Lymph from the right lower limb will empty into the

Which class of antibodies in the blood and lymph indicates a recent infection?

Which organ/s produce  hormones that promotes maturation of T cells?

Which cells display CD4 molecules and recognize antigens in association with MHC Class II ?  

The NVCS is based on a nationally representative sample of