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Nursing Elites

ATI TEAS 7

Anatomy

1. What is the process by which muscle tissue wastes away due to disuse or lack of nutrients?

Correct answer: B

Rationale: The correct answer is B: Atrophy. Atrophy is the process by which muscle tissue wastes away due to disuse or lack of nutrients. When muscles are not regularly used or do not receive enough nutrients, they can decrease in size and strength. Hypertrophy, on the other hand, refers to the increase in muscle size and strength through exercise and proper nutrition. Fibrosis is the formation of excess fibrous connective tissue in an organ or tissue, leading to scarring. Rigor mortis is a temporary stiffening of muscles that occurs after death. Therefore, in this context, atrophy best describes the wasting away of muscle tissue due to disuse or lack of nutrients.

2. Which property of a wave determines its loudness in sound waves?

Correct answer: a

Rationale: Amplitude in sound waves relates to the loudness or intensity of the sound.

3. How many moles of oxygen are required to completely react with 5 moles of propane (C3H8) in the combustion reaction?

Correct answer: b

Rationale: The balanced equation is C3H8 + 5O2 → 3CO2 + 4H2O, indicating a 5:10 ratio between moles of oxygen and moles of propane.

4. A routine urinalysis is a common diagnostic test. What does a urinalysis typically evaluate?

Correct answer: D

Rationale: The correct answer is D, 'All of the above.' A routine urinalysis is a comprehensive test that evaluates various aspects of urine to provide insights into overall health. Blood sugar levels can be assessed to screen for diabetes or monitor diabetes management. The presence of white blood cells in the urine can indicate a possible infection in the urinary tract. Additionally, kidney function can be evaluated by examining factors such as protein levels, creatinine, and electrolytes in the urine. Therefore, a urinalysis typically evaluates blood sugar levels, presence of white blood cells (indicating possible infection), and kidney function, making 'All of the above' the correct choice.

5. Nutrients are absorbed into the bloodstream through which part of the digestive system?

Correct answer: C

Rationale: The correct answer is C: Small intestine. The small intestine is where most of the absorption of nutrients takes place in the digestive system. Its inner lining is covered with tiny finger-like projections called villi, which increase the surface area for absorption. Nutrients such as carbohydrates, proteins, fats, vitamins, and minerals are absorbed into the bloodstream through the walls of the small intestine. The stomach primarily helps with the initial digestion of food, the large intestine absorbs water and salts, and the esophagus is the tube that carries food from the mouth to the stomach. Therefore, the small intestine is the main site of nutrient absorption in the digestive system.

6. What happens to the frequency of a wave when its wavelength is doubled, assuming the speed remains constant?

Correct answer: C

Rationale: Since the wave speed is constant, if the wavelength increases, the frequency must decrease to maintain the same energy transfer per unit time.

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