Nokea
What neurotransmitter will result in constriction of the pupil?
- A. norepinephrine
- B. acetylcholine
- C. epinephrine
- D. serotonin
Correct Answer: B
Rationale: The correct answer is B: acetylcholine. Acetylcholine is the neurotransmitter responsible for causing constriction of the pupil. When acetylcholine binds to muscarinic receptors in the eye muscles, it triggers the muscles to contract, leading to pupil constriction. Norepinephrine (choice A) and epinephrine (choice C) are both involved in the fight-or-flight response and dilate the pupils. Serotonin (choice D) does not directly affect pupil constriction.
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A patient exhibits sudden, severe headache and neck stiffness. What should the nurse do first?
- A. Perform a neurologic assessment and evaluate for signs of meningeal irritation.
- B. Measure the patient's blood pressure.
- C. Check the patient's blood glucose levels.
- D. Inspect the patient's throat.
Correct Answer: A
Rationale: Sudden, severe headache and neck stiffness may indicate meningitis. A neurologic assessment and evaluation for meningeal irritation are critical. Blood pressure, glucose levels, and throat inspection are secondary.
A microscopic gap between a pair of adjacent neurons over which nerve impulses pass when going from one neuron to the next is called:
- A. Neurotransmitter
- B. Synapse
- C. Axon
- D. None of the above
Correct Answer: B
Rationale: Synapse is the correct answer because it is the junction between two neurons where electrical or chemical signals are transmitted. Neurotransmitters are the chemicals that facilitate this transmission, but the gap itself is called the synapse.
The nurse is explaining the neurological system to a group of nursing students. How many pairs of spinal nerves should the nurse explain are contained within the human body?
- A. 15
- B. 25
- C. 31
- D. 42
Correct Answer: C
Rationale: There are 31 pairs of spinal nerves in the human body: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal. Understanding the anatomy of the spinal nerves is essential for explaining neurological function.
The Schwann cells form a myelin sheath around the:
- A. dendrites
- B. cell body
- C. nucleus
- D. axon
Correct Answer: D
Rationale: Schwann cells are responsible for forming the myelin sheath around axons in the peripheral nervous system (PNS). Dendrites, cell bodies, nuclei, and nodes of Ranvier are not directly myelinated by Schwann cells. Therefore, D is the correct answer.
Executive functioning involves the integrated use of several cognitive processes by which people problem-solve, plan, initiate, organise and monitor goal-directed activities. Deficits in this collection of integrated skills involves which kind of training:
- A. Goal management training (GMT).
- B. Executive function training (EFT).
- C. Integrated skills training (IST).
- D. Organisational skills training (OST).
Correct Answer: A
Rationale: Goal Management Training (GMT) is a therapeutic approach designed to improve executive functioning by teaching individuals how to set, prioritize, and achieve goals. This training involves breaking down complex tasks into manageable steps, monitoring progress, and adjusting strategies as needed. GMT is particularly effective for individuals with neurological disorders or brain injuries that impair executive functions, helping them regain independence and improve daily functioning.