Flaccidity and weakness, floppy arms, and hyperextensible muscles are associated with which level of muscle tone?

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Study for the Parkinson’s Disease Exam. Engage with detailed flashcards and multiple-choice questions, each offering hints and explanations. Prepare effectively for your exam!

Multiple Choice

Flaccidity and weakness, floppy arms, and hyperextensible muscles are associated with which level of muscle tone?

Explanation:
Muscle tone is the baseline resistance a muscle offers to being passively stretched, even when the person isn’t actively contracting. When tone is decreased, the muscle offers little resistance, so the limb feels soft or floppy and joints can move more than usual, leading to hyperextensible or lax joints. That floppy, low-tension state matches the description of flaccidity with weakness and hyperextensible muscles. In contrast, increased tone causes stiffness or spasticity/rigidity, with noticeable resistance to passive movement. So the signs described point to decreased muscle tone.

Muscle tone is the baseline resistance a muscle offers to being passively stretched, even when the person isn’t actively contracting. When tone is decreased, the muscle offers little resistance, so the limb feels soft or floppy and joints can move more than usual, leading to hyperextensible or lax joints. That floppy, low-tension state matches the description of flaccidity with weakness and hyperextensible muscles. In contrast, increased tone causes stiffness or spasticity/rigidity, with noticeable resistance to passive movement. So the signs described point to decreased muscle tone.

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