Nokea
A patient with severe joint immobility is receiving physical and exercise therapy. To evaluate the effect of the treatment, the nurse may assess joint range of motion with what equipment?
- A. Ergometer
- B. Myometer
- C. Goniometer
- D. Arthrometer
Correct Answer: C
Rationale: A goniometer measures joint angles.
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The cerebellum, ________ portion of the brain, is located below the occipital lobes of the cerebrum.
- A. the largest
- B. the second largest
- C. the third largest
- D. the smallest
Correct Answer: B
Rationale: The cerebellum is the second largest portion of the brain, located below the occipital lobes of the cerebrum. It plays a crucial role in coordinating voluntary movements, balance, and posture. While the cerebrum is the largest part of the brain, the cerebellum is smaller but still significant in size and function. Therefore, the second largest is the correct answer.
Cell bodies for the motor supply of the trigeminal nerve lie
- A. Hypothalamus
- B. Midbrain
- C. Posterior to cerebral aqueduct
- D. Cerebral cortex
Correct Answer: B
Rationale: The motor nucleus of the trigeminal nerve is located in the midbrain. It supplies muscles of mastication, such as the masseter and temporalis.
A drug is called an agonist if it ________.
- A. blocks a receptor
- B. interferes with neurotransmitter reuptake
- C. acts like the endogenous neurotransmitter by binding to its receptor
- D. blocks the voltage-gated calcium ion channel
Correct Answer: C
Rationale: The correct answer is C because an agonist mimics the action of the endogenous neurotransmitter by binding to its receptor. This leads to activation of the receptor and physiological response. Choice A is incorrect as an agonist does not block a receptor. Choice B is incorrect as it describes a reuptake inhibitor, not an agonist. Choice D is incorrect as it refers to a calcium channel blocker, not an agonist. In conclusion, an agonist activates a receptor by binding to it, unlike the other choices which describe different mechanisms of action.
In counseling patients with spinal cord lesions regarding sexual function, how should the nurse advise a male patient with a complete lower motor neuron lesion?
- A. He is most likely to have reflexogenic erections and may experience orgasm if ejaculation occurs
- B. He may have uncontrolled reflex erections but orgasm and ejaculation are usually not possible
- C. He has a lesion with the greatest possibility of successful psychogenic erection with ejaculation and orgasm
- D. He will probably be unable to have either psychogenic or reflexogenic erections and no ejaculation or orgasm
Correct Answer: B
Rationale: Lower motor neuron lesions result in uncontrolled reflex erections.
Dopamine is an important neurotransmitter. Which disease or disorder results when the neurons in the brain that produce dopamine die?
- A. Multiple sclerosis
- B. Lou Gehrig disease (amyotrophic lateral sclerosis)
- C. Parkinson disease
- D. Seizure disorder
Correct Answer: C
Rationale: Parkinson disease is caused by the degeneration of dopamine-producing neurons in the brain, leading to motor symptoms such as tremors and rigidity. Multiple sclerosis and ALS involve different neurological mechanisms, while seizure disorders are related to abnormal electrical activity in the brain. Dopamine's role in motor control is critical to understanding Parkinson disease.