Microbes can have the following relationships with their hosts: 1. Parasitism: the microbe benefits at the expense of the host. 2.Mutulaism: both microbe and the host benefit. 3. Commensalism: one of the organism benefits while the other neither experience benefit or harm. 4.Antagonism: one of the organism benefits at he expense of the other 5. Synergism: is a special type of relationship among organisms in which both of them work together, it may be beneficial and it may be harmful.
The renal artery is the artery which leads into the kidney and branches into segmental arteries and further divides into interlobar arteries which penetrate the renal capsule and extend through the renal columns between the renal pyramids
