Acid-Base Balance and Body Fluids Quiz

Explore acid-base physiology with 16 questions covering regulation, disturbances, and compensatory mechanisms.

#1

Which organ is primarily responsible for regulating acid-base balance in the body?

Liver
Kidneys
Lungs
Heart
#2

Which condition is associated with metabolic alkalosis?

Excessive vomiting
Renal failure
Chronic obstructive pulmonary disease (COPD)
Respiratory acidosis
#3

What is the normal pH range of arterial blood in humans?

6.0 - 7.0
7.35 - 7.45
8.0 - 9.0
5.0 - 6.0
#4

Which of the following is a volatile acid that is eliminated by the lungs?

Lactic acid
Carbonic acid
Hydrochloric acid
Sulfuric acid
#5

Which of the following is a non-volatile acid that contributes to the body's acid load?

Acetic acid
Citric acid
Phosphoric acid
Ascorbic acid
#6

In the context of acid-base balance, what does the term 'respiratory acidosis' refer to?

Excess carbon dioxide in the blood
Decreased bicarbonate levels
Excessive production of lactic acid
High concentration of acetic acid
#7

Which of the following ions is considered a weak acid that can influence intracellular pH?

Sodium ion
Potassium ion
Chloride ion
Calcium ion
#8

What is the normal range of serum bicarbonate concentration in the human body?

22-26 mEq/L
35-45 mm Hg
7.35-7.45
120-150 mEq/L
#9

Which of the following conditions may lead to respiratory alkalosis?

Hypoventilation
Hyperventilation
Renal failure
Excessive bicarbonate ingestion
#10

What is the main function of the bicarbonate ion in the body's buffer system?

Neutralizing acids
Enhancing muscle contraction
Transporting oxygen
Facilitating nerve impulses
#11

Which medical condition is characterized by a disturbance in acid-base balance, resulting in rapid breathing and metabolic acidosis?

Cystic fibrosis
Diabetes mellitus
Respiratory alkalosis
Ketoacidosis
#12

Which of the following is a common buffer system in the extracellular fluid?

Phosphate buffer system
Hemoglobin buffer system
Protein buffer system
Ammonia buffer system
#13

What is the role of the renin-angiotensin-aldosterone system in acid-base balance?

Increases bicarbonate reabsorption
Enhances ammonia excretion
Regulates hydrogen ion secretion
Promotes carbon dioxide elimination
#14

What is the primary role of the carbonic anhydrase enzyme in acid-base regulation?

Facilitating ammonia synthesis
Catalyzing the formation of carbonic acid
Promoting bicarbonate reabsorption
Inhibiting hydrogen ion secretion
#15

Which respiratory disorder is associated with a decreased ability to exhale carbon dioxide, leading to respiratory acidosis?

Asthma
Chronic bronchitis
Emphysema
Pneumonia
#16

Which of the following is a consequence of prolonged metabolic acidosis?

Hyperkalemia
Hypocalcemia
Hypophosphatemia
Hypernatremia

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