Podcast
Questions and Answers
Which component is primarily responsible for the connection between the CNS and skeletal muscle contraction units?
Which component is primarily responsible for the connection between the CNS and skeletal muscle contraction units?
- Gamma motor neurons
- Beta motor neurons
- Interneurons
- Alpha motor neurons (correct)
What type of atrophy is caused by damage to the nervous system?
What type of atrophy is caused by damage to the nervous system?
- Ischemic atrophy
- Hypertrophic atrophy
- Disuse atrophy
- Neurogenic atrophy (correct)
Which condition is characterized by quick twitches of muscle fibers visible on the surface of the skin?
Which condition is characterized by quick twitches of muscle fibers visible on the surface of the skin?
- Fibrillations
- Spasms
- Fasciculations (correct)
- Hypertonia
What is the term used to describe abnormally low resistance to passive stretch?
What is the term used to describe abnormally low resistance to passive stretch?
What symptom is typically not visible except in the tongue?
What symptom is typically not visible except in the tongue?
What does flaccidity indicate in terms of muscle resistance?
What does flaccidity indicate in terms of muscle resistance?
What is the primary responsibility of the pyramidal system with regards to lower motor neurons (LMNs)?
What is the primary responsibility of the pyramidal system with regards to lower motor neurons (LMNs)?
Which part of the central nervous system do lower motor neurons primarily influence to achieve voluntary movement?
Which part of the central nervous system do lower motor neurons primarily influence to achieve voluntary movement?
Where are the cell bodies of lower motor neurons located?
Where are the cell bodies of lower motor neurons located?
What type of neuron must be intact for normal voluntary movements, according to the lecture?
What type of neuron must be intact for normal voluntary movements, according to the lecture?
Through which route do upper motor neurons send impulses to lower motor neurons?
Through which route do upper motor neurons send impulses to lower motor neurons?
From where do the anterior horn cells (AHCs) receive motor impulses?
From where do the anterior horn cells (AHCs) receive motor impulses?
What influences fine-tuning coordination during movement?
What influences fine-tuning coordination during movement?
What functional role do muscle receptors play during the execution of movement?
What functional role do muscle receptors play during the execution of movement?
What is the primary function of alpha motor neurons?
What is the primary function of alpha motor neurons?
Where are the cell bodies of lower motor neurons located?
Where are the cell bodies of lower motor neurons located?
What type of axons do gamma motor neurons have?
What type of axons do gamma motor neurons have?
Which of the following is true about intrafusal muscle fibers?
Which of the following is true about intrafusal muscle fibers?
Which type of neuron is primarily responsible for regulating muscle tone?
Which type of neuron is primarily responsible for regulating muscle tone?
What happens when an alpha motor neuron releases sufficient ACh?
What happens when an alpha motor neuron releases sufficient ACh?
What is the primary role of the motor nuclei of cranial nerves?
What is the primary role of the motor nuclei of cranial nerves?
Which pathway do the axons of alpha and gamma motor neurons follow to reach skeletal muscle?
Which pathway do the axons of alpha and gamma motor neurons follow to reach skeletal muscle?
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