Nokea
If an individual suffers a traumatic event and has a neurological disorder that means they may be unable to recall anything from the moment of the injury or to retain memories of recent events. This is known as:
- A. anterograde amnesia
- B. retrograde amnesia
- C. postevent amnesia
- D. antenatal amnesia
Correct Answer: A
Rationale: Anterograde amnesia refers to the inability to form new memories after the onset of amnesia, often due to brain injury or trauma. This condition severely impacts an individual's ability to retain information about recent events, while memories from before the injury may remain intact. It is commonly associated with damage to the hippocampus, a brain region critical for memory formation and consolidation.
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A patient who had a below-the-knee amputation is to be fitted with a temporary prosthesis. It is most important for the nurse to teach the patient to do what?
- A. Inspect the residual limb daily for irritation.
- B. Apply an elastic shrinker before applying the prosthesis.
- C. Perform range-of-motion (ROM) exercises to the affected leg four times a day.
- D. Apply alcohol to the residual limb every morning and evening to toughen the skin.
Correct Answer: B
Rationale: Shrinkers help mold the residual limb for the prosthesis.
The 'sodium-potassium pump' pumps ___________.
- A. sodium ions out and potassium ions in
- B. sodium ions in and potassium ions out
- C. sodium and potassium ions in
- D. sodium and potassium ions out
Correct Answer: A
Rationale: The sodium-potassium pump is a membrane protein that actively transports sodium ions out of the neuron and potassium ions into the neuron. This process requires energy in the form of ATP and helps maintain the resting membrane potential. By creating a concentration gradient of these ions, the pump ensures that the neuron is ready to generate action potentials and transmit nerve impulses efficiently.
Which of these physiological changes would not be considered part of the sympathetic fight-or-flight response?
- A. increased heart rate
- B. increased sweating
- C. dilated pupils
- D. increased stomach motility
Correct Answer: D
Rationale: The correct answer is D: increased stomach motility. In the sympathetic fight-or-flight response, the body prioritizes blood flow to essential organs and muscles, leading to decreased activity in non-essential functions like digestion (stomach motility). This is to conserve energy for immediate action. Increased heart rate, sweating, and dilated pupils are all part of the fight-or-flight response as they prepare the body for quick action and heightened awareness.
In initial stage of Parkinson disease the most typical involuntary movement is the following:
- A. chorea
- B. atetosis
- C. tremor
- D. dystonia
Correct Answer: C
Rationale: Tremor is the correct answer because it is one of the earliest and most characteristic symptoms of Parkinson's disease. The tremor is typically a resting tremor, which decreases with voluntary movement and is often described as ‘pill-rolling' due to its appearance. It results from the degeneration of dopaminergic neurons in the substantia nigra.
What are the two major divisions of the nervous system?
- A. endocrine and exocrine nervous systems
- B. upper and lower nervous systems
- C. spinal and extremity nervous systems
- D. central and peripheral nervous systems
Correct Answer: D
Rationale: The nervous system is divided into the central nervous system (CNS), which includes the brain and spinal cord, and the peripheral nervous system (PNS), which includes all the nerves outside the CNS. This division is fundamental to understanding how the body processes and responds to information.