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Physiological saline is 0.9% NaCl. Nurse Ima Fool is a bit distracted and makes a 9.0% NaCl solution. The tonicity of the solution is_ ____compared to inside a cell and would cause the patient's red blood cells to undergo

A.

isotonic; nothing

B.

hypotonic; crenation

C.

hypertonic; crenation

D.

hypertonic: lysis

Answer and Explanation

The Correct Answer is C

A. isotonic; nothing: Isotonic means equal solute concentration. 0.9% NaCl is isotonic; 9.0% is much higher, so not isotonic.
B. hypotonic; crenation: A hypotonic solution has less solute than the cell. Crenation (shriveling) occurs in a hypertonic solution.
C. hypertonic; crenation: A 9.0% NaCl solution is hypertonic (more solutes than inside the cell). Water moves out of red blood cells, causing them to shrink or crenate.
D. hypertonic; lysis: Lysis (bursting) occurs in hypotonic solutions, where water enters the cell.


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Related Questions

Correct Answer is D

Explanation

A. 1,3,3,1,2,4: This order is illogical-it repeats pleura in an inconsistent pattern and places visceral pleura first.
B. 3,1,1,3,4,2: It ends with visceral pericardium followed by parietal, which is anatomically reversed.
C. 1,3,3,1,4,2: Starts with visceral instead of parietal and ends in the wrong order.
D. 3,1,1,3,2,4: This choice correctly represents the entry path: through parietal pleura (3) → visceral pleura (1) → lung → parietal pericardium (2) → visceral pericardium (4) → heart.

Correct Answer is D

Explanation

A. monosaccharides: Monosaccharides are the building blocks of carbohydrates, not lipids.
B. a glycerol plus three glycogen chains: Glycogen is a polysaccharide, not a component of triglycerides.
C. a glycerol plus three amino acid chains: Amino acids form proteins, not triglycerides.
D. a glycerol plus three fatty acid chains: A triglyceride is made of one glycerol molecule and three fatty acids-this is the primary structure of fats.

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