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Questions and Answers
What is the main function of the stretch reflex?
What is the main function of the stretch reflex?
- To excite sensory fibers of muscle spindles
- To activate alpha motor neurons of antagonist muscles
- To cause muscle relaxation
- To prevent muscle tearing from over-stretching (correct)
What does hyporeflexia indicate about the reflex response?
What does hyporeflexia indicate about the reflex response?
- Damage to the upper motor neuron
- Damage to the lower motor neuron (correct)
- Enhanced stretch reflex
- Normal functioning of the CNS
In the stretch reflex, what do abnormal reactions suggest?
In the stretch reflex, what do abnormal reactions suggest?
- Damage to the central nervous system (CNS) (correct)
- Lack of sensory fiber excitation
- Damage to the peripheral nervous system (PNS)
- Inhibition of alpha motor neurons
In hyporeflexia, a disruption in which fibers can lead to a weak reflex response?
In hyporeflexia, a disruption in which fibers can lead to a weak reflex response?
What happens when sensory fibers activate interneurons in the stretch reflex?
What happens when sensory fibers activate interneurons in the stretch reflex?
What is a characteristic of the stretch (patellar) reflex?
What is a characteristic of the stretch (patellar) reflex?
What is the significance of hyperreflexia in the context of the upper motor neuron?
What is the significance of hyperreflexia in the context of the upper motor neuron?
Which spinal segment does the biceps reflex correspond to?
Which spinal segment does the biceps reflex correspond to?
How does the stretch reflex respond to over-stretching?
How does the stretch reflex respond to over-stretching?
What can cause hyporeflexia in the stretch reflex loop?
What can cause hyporeflexia in the stretch reflex loop?
What is the neural pathway for the biceps reflex?
What is the neural pathway for the biceps reflex?
Why does hyperreflexia occur according to the text?
Why does hyperreflexia occur according to the text?
What is the role of the stretch reflex in muscle contraction?
What is the role of the stretch reflex in muscle contraction?
What does abnormality in the stretch reflex reaction suggest?
What does abnormality in the stretch reflex reaction suggest?
How does the stretch reflex help in smoothing muscle contractions?
How does the stretch reflex help in smoothing muscle contractions?
What is the function of the Golgi tendon reflex?
What is the function of the Golgi tendon reflex?
What happens when a muscle contracts and creates tension on its tendon?
What happens when a muscle contracts and creates tension on its tendon?
Why might a sectioned muscle spindle sensory nerve lead to jerky muscle contractions?
Why might a sectioned muscle spindle sensory nerve lead to jerky muscle contractions?
Which type of neurons directly innervate skeletal muscle fibers?
Which type of neurons directly innervate skeletal muscle fibers?
What is the main function of Gamma Motor neurons?
What is the main function of Gamma Motor neurons?
Where are muscle spindles primarily located?
Where are muscle spindles primarily located?
What do Golgi Tendon Organs primarily sense?
What do Golgi Tendon Organs primarily sense?
Which receptors provide proprioceptive sensation by sensing the state of muscles?
Which receptors provide proprioceptive sensation by sensing the state of muscles?
What is the main role of Interneurons in the spinal cord?
What is the main role of Interneurons in the spinal cord?
What is the role of Golgi tendon sensory fibers (Ib) in transmitting impulses to the spinal cord?
What is the role of Golgi tendon sensory fibers (Ib) in transmitting impulses to the spinal cord?
What happens when a painful stimulus initiates the withdrawal reflex?
What happens when a painful stimulus initiates the withdrawal reflex?
Which type of reflex is initiated by a painful stimulus causing automatic withdrawal of the threatened body part?
Which type of reflex is initiated by a painful stimulus causing automatic withdrawal of the threatened body part?
In the Withdrawal and Crossed Extensor Reflex, what happens in the opposite limb to the one experiencing the painful stimulus?
In the Withdrawal and Crossed Extensor Reflex, what happens in the opposite limb to the one experiencing the painful stimulus?
What is the purpose of the series of reflexes involving Withdrawal & Crossed Extensor reflexes?
What is the purpose of the series of reflexes involving Withdrawal & Crossed Extensor reflexes?
How do sensory neurons synapse with excitatory interneurons affect antagonist muscles?
How do sensory neurons synapse with excitatory interneurons affect antagonist muscles?
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