One difference between the plasma and interstitial

ATI LPN

ATI LPN Test Bank

One difference between the plasma and interstitial fluid is that the plasma has significantly more than interstitial fluid.

A. protein B. bicarbonate C. chloride D. water volume

Correct Answer: A

Rationale: Plasma contains more protein (e.g., albumin) than interstitial fluid, contributing to osmotic pressure.

The stimulus for secretion of atrial natriuretic hormone is increased

A. blood osmolality B. aldosterone production C. blood pressure in atria of heart D. blood pressure in kidney's afferent arterioles

Correct Answer: C

Rationale: Atrial natriuretic hormone (ANH) is released when atrial pressure rises, promoting sodium and water excretion.

Chloride ions

A. are cations B. are found only inside cells C. are part of the DNA molecule D. are lost when vomiting

Correct Answer: D

Rationale: Chloride, an anion, is lost in vomiting due to gastric HCl secretion.

Hyperkalemia is defined as

A. excess excitability of kalems B. reduction of plasma calcium level C. increase in plasma potassium level D. increase in plasma sodium level

Correct Answer: C

Rationale: Hyperkalemia is an elevated plasma potassium level.

Adequate calcium absorption from the GI tract depends on

A. serum K levels B. serum calcitonin levels C. adequate amounts of vitamin D D. the osmolality of the extracellular fluid

Correct Answer: C

Rationale: Vitamin D enhances intestinal calcium absorption.

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