In this task, you will be given sentences in which your task is to recognize the name of the organ of the body. An organ is a collection of tissues that structurally form a functional unit specialized to perform a particular function. Although there might be several correct answers, you need to write one of them.

Q:  The extracorporeal membrane used in a continuous renal replacement therapy ( CRRT ) for the treatment of a critically ill patient with acute renal failure ( ARF ) is vitally important for several reasons , including its influence on biocompatibility and filter performance .

A: renal
****
Q:  MR T ( 1 ) - weighted and T ( 2 ) - weighted images showed the tumor to be isointense to normal brain parenchyma and to be enhanced densely .

A: brain
****
Q:  Effects of hypertension and sympathetic denervation on cerebral blood flow in newborn pigs .

A:
cerebral
****