Question

13. True or False: Correct the false statements.

_____ The internal urethral sphincter is controlled by the somatic nervous system, and the external urethral sphincter is controlled by the autonomic nervous system.

_____ The kidney clears the blood of all nitrogenous wastes.

_____ Sodium’s renal clearance is less than the GFR.

_____ Most water reabsorption is done by the collecting duct.

_____ The myogenic mechanism and tubuloglomerular feedback both respond to high GFR by constricting the efferent arteriole.

Answer 1

Q1. This statement is false.

The internal urethral sphincter is controlled by the visceral nervous system, and the external urethral sphincter is controlled by the somatic nervous system.

Q2. This statement is true.

The kidney clears the blood of all nitrogenous wastes in the form of urea.

Q3. This statement is true.

Sodium’s renal clearance is less than the GFR.

Q4. This statement is false.

Most water reabsorption is done by the proximal convoluted tubule.

Q5. This statement is false.

The myogenic mechanism and tubuloglomerular feedback both respond to high GFR by dilating the afferent arteriole.