Nokea
Which of the following is an incorrect pairing?
- A. norepinephrine dilates the pupil
- B. epinephrine increases blood pressure
- C. acetylcholine decreases digestion
- D. norepinephrine increases heart rate
Correct Answer: C
Rationale: The correct answer is C because acetylcholine actually increases digestion by stimulating the release of digestive enzymes and promoting peristalsis. A is incorrect because norepinephrine dilates the pupil, B is incorrect because epinephrine does increase blood pressure, and D is incorrect because norepinephrine does increase heart rate. Remember, acetylcholine is primarily responsible for parasympathetic responses, which include rest and digest functions.
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Which type of seizure is most likely to cause death for the patient?
- A. Subclinical seizures
- B. Myoclonic seizures
- C. Psychogenic seizures
- D. Tonic-clonic status epilepticus
Correct Answer: D
Rationale: Status epilepticus is a life-threatening condition requiring immediate intervention
Chemicals called ________ are stored in neurons and released when the cell is stimulated by a signal.
- A. toxins
- B. cytokines
- C. chemokines
- D. neurotransmitters
Correct Answer: D
Rationale: The correct answer is D: neurotransmitters. Neurons store and release neurotransmitters in response to signals to communicate with other neurons or target cells. Neurotransmitters play a crucial role in transmitting signals across synapses. Toxins (A) are harmful substances, not involved in neuronal communication. Cytokines (B) and chemokines (C) are signaling molecules involved in immune responses, not neuronal communication. Therefore, the correct choice is neurotransmitters.
The following conditions are required for rhodopsin regeneration:
- A. NADPH
- B. darkness
- C. splitting of all trans-retinal from the opsin
- D. all above
Correct Answer: D
Rationale: Rhodopsin regeneration requires NADPH, darkness, and the separation of all-trans-retinal from opsin. These steps are essential for the visual cycle.
What test provides fast, precise measurement of the bone mass of the spine, forearm, and total body to evaluate osteoporosis?
- A. Bone scan
- B. Diskogram
- C. Quantitative ultrasound (QUS)
- D. Dual energy x-ray absorptiometry (DXA)
Correct Answer: D
Rationale: DXA is the gold standard for bone density measurement.
The nurse enters the room of a client diagnosed with acute exacerbation of multiple sclerosis and finds the client crying. Which statement is the most therapeutic response for the nurse to make?
- A. Why are you crying? The medication will help the disease.
- B. You seem upset. I will sit down and we can talk for awhile.
- C. Multiple sclerosis is a disease that has good times and bad times.
- D. I will have the chaplain come and stay with you for a while.
Correct Answer: B
Rationale: Acknowledging the client's emotions and offering support is the most therapeutic response, as it validates their feelings and provides comfort.