The Question is from neet-zoology excretory-products-and-their-elimination human-excretory-system, and it was created by the author Mr. BALACHANDRA.N

Question

Which of the following is NOT a function of the kidneys?

Mr. BALACHANDRA.N · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Kidney functions
 **Related Topics**: Excretory system, urinary system, homeostasis
 **Prerequisites**: Basic understanding of human physiology
## SOLUTION PATHWAY
**Given Information**:
  The question asks to identify a function NOT performed by the kidneys.
  Options: Regulation of blood pressure, Regulation of blood pH, Production of urea, Removal of metabolic wastes
**Method & Steps**:
 1. Analyze each option to determine if it's a kidney function.
  Reasoning: We need to consider the primary roles of the kidneys in maintaining bodily homeostasis.
  Formula/Rule:  None directly applicable.
 2. Identify the option that does NOT describe a kidney function.
  Working: Let's examine each option:
   a. Regulation of blood pressure: Kidneys help regulate blood pressure through the renin-angiotensin-aldosterone system (RAAS).
   b. Regulation of blood pH: Kidneys regulate blood pH by excreting H+ ions and reabsorbing bicarbonate ions.
   c. Production of urea: Urea is produced in the liver, not the kidneys. The kidneys filter and excrete urea.
   d. Removal of metabolic wastes: Kidneys filter and excrete metabolic wastes like urea, creatinine, and uric acid.
 3. Conclude which option is NOT a function of the kidneys.
  Result: Option C, Production of urea, is incorrect.  Urea is produced in the liver as a byproduct of protein metabolism and then filtered and excreted by the kidneys.
  Verification: The other options are all established kidney functions.
 ## OPTION ANALYSIS
A ✓: Regulation of blood pressure is a key function of the kidneys through the RAAS system.
B ✓: Regulation of blood pH is achieved by the kidneys through the selective reabsorption and excretion of ions.
C :x: Production of urea is primarily a liver function; the kidneys only excrete it.
D ✓: Removal of metabolic wastes is a crucial function of the kidneys in maintaining homeostasis.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing the roles of the liver and kidneys in urea metabolism: Remember that the liver produces urea, while the kidneys excrete it.
  2.Overlooking the multiple functions of the kidneys: Kidneys perform many vital functions beyond just waste removal.
 **Quick Tips**:
  1.Focus on the primary roles of the kidneys: filtration, reabsorption, and secretion.
  2.Use mnemonics to remember kidney functions (e.g.,  'R.A.M.' for Regulation, Acid-base balance, Metabolism waste removal).

Mr. BALACHANDRA.N · Answer

Regulation of blood pressure

Mr. BALACHANDRA.N · Answer

Regulation of blood pH

Mr. BALACHANDRA.N · Answer

The correct Option is "Production of urea"

Mr. BALACHANDRA.N · Answer

Removal of metabolic wastes

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