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The ___________ is not an organ of the urinary system.

A.

urethra

B.

ureter

C.

kidney

D.

urinary bladder

E.

Liver

Answer and Explanation

The Correct Answer is E

A. Urethra: The urethra is a part of the urinary system that carries urine from the urinary bladder to the outside of the body. 

 

B. Ureter: The ureters are tubes that carry urine from the kidneys to the urinary bladder. They are part of the urinary system.

 

C. Kidney: The kidneys are the primary organs of the urinary system responsible for filtering blood and producing urine. 

 

D. Urinary bladder: The urinary bladder is an organ in the urinary system that stores urine before it is excreted. 

 

E. Liver: The liver is not an organ of the urinary system. It plays a crucial role in metabolism, detoxification, and bile production, but it is part of the digestive system. 


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View Related questions

Correct Answer is A

Explanation

A. K+: Potassium (K+) is the most abundant cation in the intracellular fluid (ICF). This is the correct answer.

B. Ca2+: Calcium (Ca2+) is not the most abundant cation in the ICF; it is found in lower concentrations within cells compared to potassium.

C. Cl-: Chloride (Cl-) is the most abundant anion in the extracellular fluid (ECF), not in the intracellular fluid.

D. Na: Sodium (Na) is the most abundant cation in the extracellular fluid (ECF), not in the intracellular fluid.

Correct Answer is C

Explanation

A. Destroy ingested pathogens: HCl in the stomach helps destroy ingested pathogens, providing a first line of defense against infections. Therefore, this is a correct function of HCl.

B. Convert Fe3+ to Fe2+: HCl aids in the conversion of iron from its ferric (Fe3+) to ferrous (Fe2+) form, which is more easily absorbed in the intestine. Therefore, this is a correct function of HCl.

C. Emulsify lipids: Emulsification of lipids is the function of bile, not hydrochloric acid. HCl does not emulsify lipids. This is the correct answer.

D. Activate pepsinogen to pepsin: HCl activates pepsinogen, converting it to the active enzyme pepsin, which is essential for protein digestion in the stomach. Therefore, this is a correct function of HCl.

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