Foundations of Neuromuscular Functioning

Every question here, with the answer

1. A client touches a very hot surface and pulls the hand away before consciously thinking about the action. Which explanation best describes the nervous system function involved?

   1. The hypothalamus is controlling the endocrine system through the anterior pituitary gland.
   2. The cerebellum is comparing sensory feedback with information from the cerebrum.
   3. The CNS is producing a protective reflex response without conscious effort.
   4. The thalamus is regulating sleep, wakefulness, and consciousness.

   Answer: The CNS is producing a protective reflex response without conscious effort.

   The rapid withdrawal is best explained by the CNS facilitating a reflex action that protects the body from harm. The other options describe real functions from the section, but they do not explain a quick protective response that occurs without conscious effort.

2. A client reports difficulty swallowing and altered throat sensation and taste. Which cranial nerve would the nurse associate most directly with these findings?

   1. XII. Hypoglossal
   2. IX. Glossopharyngeal
   3. V. Trigeminal
   4. VII. Facial

   Answer: IX. Glossopharyngeal

   The glossopharyngeal nerve is associated with swallowing, throat sensations, and taste. The trigeminal nerve is related to face sensation and chewing, the facial nerve to face movement and taste, and the hypoglossal nerve to tongue movement.

3. The nurse is assessing an older adult who reports slower muscle reactions and more difficulty learning new tasks. Which age-related neurological changes from the section could contribute to these findings? Select all that apply.

   1. Decreased communication between neurons within the brain
   2. Slower neuron message processing
   3. Faster muscle reactions
   4. Increased communication between neurons within the brain
   5. Shrinking of certain areas of the brain

   Answer: Decreased communication between neurons within the brain, Slower neuron message processing, Shrinking of certain areas of the brain

   The section identifies shrinking of certain brain areas, decreased communication between neurons, and slower neuron message processing as neurological changes with aging. Increased communication and faster muscle reactions are the opposite of the changes described.

4. A client is experiencing an acute external threat, and the nurse anticipates sympathetic nervous system activation. Which involuntary responses are consistent with this activation? Select all that apply.

   1. Slowed digestion
   2. Airway muscle relaxation
   3. Increased rate of digestion
   4. Increased heart rate
   5. Pupil dilation

   Answer: Slowed digestion, Airway muscle relaxation, Increased heart rate, Pupil dilation

   The sympathetic nervous system produces fight-or-flight responses, including increased heart rate, airway muscle relaxation, pupil dilation, and slowed digestion. Increased digestion is associated with parasympathetic rest-and-digest activity, not sympathetic activation.

5. A client asks why the joints of the skull do not move like the joints of the arms and legs. Which response by the nurse is most accurate?

   1. Limited skull joint mobility helps protect the brain.
   2. Skull joints move smoothly because they are enclosed in lubricating fluid.
   3. Skull joints are designed for the widest range of motion.
   4. Skull joints are less stable because they allow free movement.

   Answer: Limited skull joint mobility helps protect the brain.

   The section explains that most skull joints allow little or no movement because this stability helps protect the brain. Freely movable joints with lubricating fluid provide greater mobility but are less stable, which does not describe most skull joints.