Nur 257 Chronic Nursing Exam 4 (2025 Update) Complete Prac

pg. 1 NUR 257 Chronic Nursing Exam 4 (2025 Update) - Complete Practice Questions with Verified Answers & Study Guide Question 1 ______ communicate messages from one neuron to another or to a specific target tissue. A. Golgi bodies B. Axons C. Electrolytes D. Neurotransmitters Correct Answer>>>D. Neurotransmitters Rationale> Neurotransmitters are chemical messengers released by neurons at the synapse (the gap between neurons) to transmit signals to the receiving cell, which can be another neuron, muscle cell, or gland cell. This process is fundamental to all nervous system function, including movement, sensation, cognition, and autonomic processes. Key Tip: Remember: Neurotransmitters = "Chemical messengers" that cross the synaptic gap. Axons carry electrical impulses, but neurotransmitters do the actual communication between cells. Question 2 The nurse is caring for an older adult with Parkinson's disease. Which neurotransmitter imbalance is primarily responsible for the motor symptoms seen in this condition?pg. 2 A. Excess dopamine B. Deficiency of acetylcholine C. Deficiency of dopamine D. Excess serotonin Correct Answer>>>C. Deficiency of dopamine Rationale> Parkinson's disease is characterized by degeneration of dopamine-producing neurons in the substantia nigra, leading to dopamine deficiency in the striatum. This imbalance between dopamine (inhibitory) and acetylcholine (excitatory) results in the classic