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True or False? If a researcher reports the critical value(s) for a test and reports a value that is less than 1.96, the researcher must have run a one-tailed test.

The medullary osmotic gradient allows the kidneys to vary urine concentration.  

List  two of the four  main nitrogenous wastes produced by the human body:  [a]  ____________________  [b]  ____________________

Identify the renal tubule that is the principal site of reabsorption of organic nutrients and many electrolytes             a. ____________________

__________  is  the condition where kidneys cannot maintain homeostasis due to nephron destruction

Just how concentrated the urine becomes depends on the body’s state of hydration.  

List the specific renal tubule in which the fluid that originated from blood becomes (or is called) urine.             a. __________

List the three mechanisms of urine formation: [a]    [b]   [c] 

The [a] ___    muscle is located in the bladder and functions in urine expulsion. The bladder  and the  [b]  _____  of the urethra are comprised of smooth muscle and are under  [c] ____   control.

Which of the following are functions of the urinary system?