what does consistency refer to

HESI A2

Vocabulary HESI A2 Practice Test

1. What does Consistency refer to?

A. Color of a fluid
B. Degree of viscosity, how thick or thin a fluid is
C. Taste of a fluid
D. Smell of a fluid

Correct answer: B

Rationale: Consistency refers to the degree of viscosity of a fluid, indicating how thick or thin it is. Viscosity is the resistance of a fluid to flow, and it determines its consistency. Choices A, color, C, taste, and D, smell, are not related to consistency. Color, taste, and smell are sensory attributes that do not define the physical property of consistency in fluids.

2. In the majority culture of America, coughing, sweating, and diarrhea are symptoms of an illness. For some individuals of Mexican-American origin, however, these symptoms are a normal part of living. The nurse recognizes that this is true, probably because Mexican-Americans:

A. have less efficient immune systems and are often ill.
B. consider these symptoms a part of normal living, not symptoms of ill health.
C. come from Mexico where coughing is normal and healthy.
D. are usually in a lower socioeconomic group and are more likely to be sick.

Correct answer: B

Rationale: In Mexican-American culture, coughing, sweating, and diarrhea are often considered normal bodily functions and not necessarily indicative of illness. This cultural perspective shapes their understanding of health and illness, leading them to view these symptoms differently than the majority culture in America. Choice A is incorrect because it generalizes Mexican-Americans as having less efficient immune systems, which is not supported by evidence. Choice C is incorrect as it oversimplifies by attributing the perception solely to coming from Mexico. Choice D is incorrect as it makes unwarranted assumptions about the socioeconomic status and health status of Mexican-Americans.

3. Which type of blood vessel carries blood back to the heart?

A. Arteries
B. Capillaries
C. Veins
D. Lymphatic vessels

Correct answer: C

Rationale: Veins are the blood vessels that carry deoxygenated blood back to the heart, except for the pulmonary veins which carry oxygenated blood from the lungs. Arteries carry oxygenated blood away from the heart. Capillaries facilitate the exchange of nutrients and gases between the blood and tissues but do not specifically carry blood back to the heart. Lymphatic vessels are part of the lymphatic system responsible for immune function and do not directly carry blood back to the heart. Therefore, the correct answer is veins.

4. You contain two odorous gases in vials with porous plugs. Gas A has twice the mass of Gas B. Which observation is most likely?

A. You will smell Gas A before you smell Gas B.
B. You will smell Gas B before you smell Gas A.
C. You will smell Gas A but not Gas B.
D. You will smell Gas B but not Gas A.

Correct answer: A

Rationale: The rate of effusion of a gas is inversely proportional to the square root of its molar mass. Since Gas A has twice the mass of Gas B, Gas A will effuse more slowly than Gas B. Therefore, you will likely smell Gas A before you smell Gas B as Gas A will escape and diffuse through the porous plug at a slower rate compared to Gas B. Choice A is correct because Gas A, with its higher molar mass, will take longer to effuse through the porous plug, causing you to smell it first. Choices B, C, and D are incorrect as they do not consider the relationship between molar mass and effusion rate.

5. How many ounces are in 8 & 1/4 pints?

A. 136 oz
B. 128 oz
C. 132 oz
D. 130 oz

Correct answer: C

Rationale: To convert 8 1/4 pints to ounces, first convert the mixed number to an improper fraction: 8 1/4 = 33/4. There are 16 ounces in 1 pint. Now, multiply 33/4 by 16 ounces per pint: 33/4 x 16 = 132 ounces. Therefore, the correct answer is 132 oz. Choice A (136 oz) is incorrect because it does not result from the correct conversion. Choice B (128 oz) is incorrect as it is a miscalculation. Choice D (130 oz) is incorrect as well, not derived from the accurate conversion process.