Osmosis differs from diffusion in that it refers to:
movement solutes from the cells to the interstitial fluid
movement of fluid out of the vascular system
substances moved across a membrane with the use of energy
movement of solvent across a semi-permeable membrane
The Correct Answer is D
A. movement solutes from the cells to the interstitial fluid: This describes diffusion, specifically solute movement down a concentration gradient.
B. movement of fluid out of the vascular system: This could describe filtration or capillary leakage, not osmosis specifically.
C. substances moved across a membrane with the use of energy: This describes active transport, not osmosis.
D. movement of solvent across a semi-permeable membrane: Osmosis is the passive movement of water (solvent) through a semi-permeable membrane from an area of low solute concentration to high solute concentration.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. hyperkalemia: Elevated potassium can cause fatal cardiac arrhythmias.
B. hyponatremia: While it can be serious, it typically causes neurologic symptoms and is less immediately life-threatening than hyperkalemia.
C. hypokalemia: Also dangerous but usually less acutely life-threatening than hyperkalemia.
D. hypernatremia: Can cause serious symptoms but not as immediately dangerous to cardiac function.
Correct Answer is A
Explanation
A. increases sodium retention by the kidney: Aldosterone acts on renal tubules to increase sodium reabsorption and potassium excretion.
B. acts on osmoreceptors to stimulate thirst: This is the role of antidiuretic hormone (ADH).
C. stimulates the production of large amounts of urine: Aldosterone promotes fluid retention, reducing urine output.
D. is secreted from the pituitary gland: It is secreted from the adrenal cortex.
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