ATI RN
ATI Anatomy and Physiology Online Practice
1. When does cell death first occur?
- A. At age 60.
- B. At age 50.
- C. At puberty.
- D. In the fetus.
Correct answer: In the fetus.
Rationale: Cell death, also known as apoptosis, first occurs during fetal development when specific cells are programmed to die. This process is essential for shaping and organizing tissues and organs. Choices A, B, and C are incorrect because cell death begins much earlier, during fetal development, rather than later in life or at puberty. Understanding the timing of cell death in different stages of life is crucial in developmental biology.
2. A healthcare professional is reviewing the laboratory values of a client who is experiencing fluid volume deficit (FVD). What finding should the professional expect?
- A. Decreased hematocrit
- B. Increased hematocrit
- C. Decreased white blood cell count
- D. Increased red blood cell count
Correct answer: B
Rationale: The correct answer is 'Increased hematocrit.' In fluid volume deficit (FVD), there is a decrease in the amount of fluid in the blood vessels, leading to hemoconcentration. This results in an increase in hematocrit levels. Choices A, C, and D are incorrect because a decrease in hematocrit, decrease in white blood cell count, and an increase in red blood cell count are not typically seen in fluid volume deficit.
3. Which client is most likely to need regular injections of vitamin B12?
- A. The client with malabsorption syndrome.
- B. The client following a vegan eating pattern.
- C. The client whose stomach does not produce intrinsic factors.
- D. The client with alcoholism.
Correct answer: C
Rationale: The correct answer is C. The client whose stomach does not produce intrinsic factors is most likely to need regular injections of vitamin B12. Intrinsic factor is essential for the absorption of vitamin B12. Without intrinsic factor, the client cannot absorb vitamin B12 from food, necessitating the need for regular injections. Choices A, B, and D do not directly impact the production of intrinsic factors in the stomach, so they are less likely to result in the need for vitamin B12 injections.
4. What is the conversion of genetic information in RNA into a sequence of amino acids?
- A. translation
- B. transcription
- C.
- D.
Correct answer: A
Rationale: The correct answer is 'translation.' Translation is the process where the genetic information in messenger RNA (mRNA) is decoded to produce a specific sequence of amino acids, forming a protein. This process occurs at ribosomes within the cell. Option B, 'transcription,' is incorrect as transcription is the process of synthesizing mRNA from a DNA template. Options C and D are irrelevant as they are not related to the conversion of genetic information into amino acids.
5. How does hyponatremia place the patient at risk?
- A. Seizures
- B. Fatigue
- C. Cardiac dysrhythmias
- D. Muscle weakness
Correct answer: C
Rationale: Hyponatremia places the patient at risk for cardiac dysrhythmias. While hyponatremia can lead to seizures due to cerebral edema caused by fluid imbalance, the most immediate and life-threatening risk is cardiac dysrhythmias. Low sodium levels can disrupt the heart's electrical activity, potentially leading to fatal arrhythmias. Although fatigue and muscle weakness are symptoms of hyponatremia, cardiac dysrhythmias pose the most critical concern as they can have severe consequences.
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