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What are the major chemical buffer systems of the body?

A.

The bicarbonate, phosphate, and protein

B.

The urinary and digestive

C.

The bicarbonate, nucleic acids, and protein

D.

The urinary and respiratory

Answer and Explanation

The Correct Answer is A

A. The bicarbonate, phosphate, and protein: The major chemical buffer systems in the body are the bicarbonate buffer system, the phosphate buffer system, and the protein buffer system. These buffers help maintain pH balance in the blood and other fluids.

 

B. The urinary and digestive: The urinary and digestive systems are involved in excretion and digestion, not buffering.

 

C. The bicarbonate, nucleic acids, and protein: Nucleic acids are not major buffering systems in the body; the bicarbonate, phosphate, and protein systems are the primary ones. 

 

D. The urinary and respiratory systems play roles in regulating acid-base balance through excretion and gas exchange but are not chemical buffer systems themselves. 


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View Related questions

Correct Answer is D

Explanation

A. Wolffian refers to structures related to the male reproductive system during embryonic development, not to uterine contractions.

B. Masters Johnson: Masters and Johnson are known for their research in human sexual response, not for describing types of uterine contractions.

C. Graafian: Graafian refers to a mature ovarian follicle, which is unrelated to uterine contractions.

D. Braxton Hicks: Braxton Hicks contractions are irregular, non-labor contractions of the uterus often referred to as "false labor."

Correct Answer is A

Explanation

A. Renal corpuscle: Blood plasma is filtered in the renal corpuscle, which includes the glomerulus and Bowman's capsule.

B. Renal capsule: The renal capsule is the outer protective layer of the kidney and does not filter blood plasma.

C. Renal tubule: The renal tubule is involved in reabsorption and secretion, not in the initial filtration of blood plasma.

D. Renal column: The renal column is a structural part of the kidney, not involved in filtering blood plasma.

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