What is most likely to cause the pain experienced in the later stages of OA?
- A. Crepitation
- B. Bouchard's nodes
- C. Heberden's nodes
- D. Bone surfaces rubbing together
Correct Answer: D
Rationale: Bone-on-bone contact causes significant pain.
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Those reflex actions which involve brain are called:
- A. Stimulus
- B. Cerebral reflexes
- C. Spinal reflexes
- D. Reflex arc
Correct Answer: B
Rationale: Cerebral reflexes are the correct answer because they involve the brain in processing and responding to stimuli. These reflexes occur in organs connected directly to the brain, such as the eyes and ears, and are more complex than spinal reflexes, which do not require brain involvement.
The nurse is providing post-procedure care for a patient recovering from a lumbar puncture. Which order should the nurse anticipate for this patient?
- A. Keep the patient NPO for 4 hours.
- B. Have the patient lie flat for 6 hours.
- C. Monitor the patient's pedal pulses every 4 hours.
- D. Keep the head of the bed elevated 30 degrees for 8 hours.
Correct Answer: B
Rationale: After a lumbar puncture, the patient should lie flat for 6 to 8 hours to prevent cerebrospinal fluid leakage and reduce the risk of a spinal headache. Monitoring pedal pulses or elevating the head of the bed is not necessary. Proper post-procedure care minimizes complications.
What is the consequence for the ability of motor neurons to find their correct targets, if a section of the spinal cord is rotated, so that the antero-posterior axis is reversed?
- A. Anterior motor neurons enter the limb in a bundle in the posterior instead of the anterior, but then take novel pathways to find the correct anterior muscles to innervate.
- B. Anterior motor neurons enter the limb in a bundle in the posterior instead of the anterior, and follow pathways intended for posterior neurons to make contacts with posterior muscles.
- C. Anterior motor neurons change their course to enter the limb in the anterior, but take their usual pathways to find the correct anterior muscles.
- D. The motor neurons grow over to the other side of the spinal cord and resume their normal pathways into muscles on their normal side of the body.
Correct Answer: B
Rationale: When the antero-posterior axis of the spinal cord is reversed, motor neurons follow their intrinsic programming and enter the limb in the reversed position. They then innervate muscles based on their new position, leading to incorrect connections. This demonstrates the importance of spatial cues in guiding motor neurons to their correct targets.
Which condition is transmitted through wound contamination, causes painful tonic spasms or seizures, and can be prevented by immunization?
- A. Tetanus
- B. Botulism
- C. Neurosyphilis
- D. Systemic inflammatory response syndrome
Correct Answer: A
Rationale: Tetanus fits the description provided.
Which of the following diets will provide the greatest symptomatic relief for Mr. Sands?
- A. Clear liquid diet
- B. Soft diet with frequent meals
- C. Regular diet
- D. High-residue diet
Correct Answer: B
Rationale: A soft diet with frequent meals reduces strain on the esophagus and stomach.