ATI RN
Health Assessment Neurological System NCLEX Questions Quizlet Questions
Question 1 of 5
Where would you see the nodes of Ranvier?
Correct Answer: A
Rationale: Nodes of Ranvier are small gaps in the myelin sheath along the axon of a neuron. They play a critical role in the rapid conduction of electrical signals, as the action potential 'jumps' from one node to the next in a process called saltatory conduction. This increases the speed and efficiency of neural communication. Nodes of Ranvier are essential for proper nerve function and are found exclusively on axons.
Question 2 of 5
Impairments in language and communication may manifest in a variety of ways, including deficits in the production of speech (e.g. fluent aphasia), an inability to comprehend or understand speech, and an inability to initiate speech (e.g. nonfluent aphasia). A treatment used with aphasic patients required to communicate without gesturing or pointing is known as:
Correct Answer: A
Rationale: Constraint-Induced Movement Therapy (CIMT) is a rehabilitation technique used to improve verbal communication in individuals with aphasia. This approach involves restricting the use of compensatory strategies, such as gesturing or pointing, and encouraging the use of verbal responses. By focusing on intensive verbal practice, CIMT helps individuals regain their ability to communicate effectively and reduces reliance on non-verbal methods.
Question 3 of 5
_______ is a disease of the myelin sheath.
Correct Answer: C
Rationale: Multiple sclerosis (MS) is a disease that affects the myelin sheath, the protective covering of nerve fibers in the central nervous system. In MS, the immune system mistakenly attacks myelin, leading to inflammation, scarring, and impaired nerve signal transmission. Symptoms include muscle weakness, coordination problems, and cognitive difficulties. MS is a chronic condition that can significantly impact a person's quality of life.
Question 4 of 5
Transmission across a synapse is achieved mainly by a________ .
Correct Answer: B
Rationale: Transmission across a synapse is primarily achieved by the diffusion of neurotransmitter molecules across the synaptic cleft. When an action potential reaches the axon terminal, it triggers the release of neurotransmitters, which diffuse across the cleft and bind to receptors on the postsynaptic neuron. This chemical signaling allows for precise and regulated communication between neurons.
Question 5 of 5
The nervous system is the centre of all mental activity including all the following except ________.
Correct Answer: C
Rationale: The nervous system is responsible for mental activities such as thinking, learning, and memory. However, digesting is a function of the digestive system, not the nervous system. While the nervous system does regulate digestion through the autonomic nervous system, the act of digestion itself is not considered a mental activity. Therefore, digesting is the correct answer as it is not a direct function of the nervous system's mental processes.