A client's muscle tone is assessed by performing:

Muscle tone refers to the residual tension present in a muscle at rest and during movement. It is clinically evaluated through passive movement to detect resistance, such as spasticity or rigidity. This reflects the integrity of the extrapyramidal system and lower motor neurons. A. Passive range-of-motion (ROM) exercises: The nurse moves the client's limbs through their normal arc while the client remains relaxed. Resistance encountered during these movements provides a direct measure of muscle tone. This is the definitive clinical method for tone assessment. B. Deep tendon reflex (DTR) testing: This technique evaluates the integrity of the reflex arc at specific spinal cord segments using a reflex hammer. While hyperreflexia can correlate with increased tone, it measures a brisk involuntary response. It does not directly assess resting muscle tension. C. Romberg's test: This test assesses cerebellar function and proprioception by having the client stand with eyes closed. It evaluates balance and the dorsal column pathway rather than individual muscle tone. A positive result indicates sensory ataxia or vestibular dysfunction. D. constructional ability testing: This cognitive assessment asks the client to draw complex shapes or clock faces to evaluate parietal lobe function. It measures visuospatial skills and praxis rather than physical muscle tone. It is used primarily in dementia and delirium screenings.