Podcast
Questions and Answers
What type of muscles are controlled by the autonomic nervous system?
What type of muscles are controlled by the autonomic nervous system?
- Skeletal muscles
- Smooth muscles (correct)
- Cardiac muscles
- All of the above
What is the main function of the somatic nervous system?
What is the main function of the somatic nervous system?
- Innervating visceral organs
- Controlling the contractions of skeletal muscles (correct)
- Controlling visceral effectors, such as smooth muscle and cardiac muscle
- Regulating glands and adipocytes
What is the role of the upper motor neuron in the somatic motor pathway?
What is the role of the upper motor neuron in the somatic motor pathway?
- Synapsing on the lower motor neuron (correct)
- Triggering a contraction in the innervated muscle
- Eliminating voluntary and reflex control over the innervated motor unit
- Innervating a single motor unit in a skeletal muscle
What happens when the lower motor neuron is activated?
What happens when the lower motor neuron is activated?
Where is the cell body of the lower motor neuron located?
Where is the cell body of the lower motor neuron located?
What is the result of destroying a lower motor neuron?
What is the result of destroying a lower motor neuron?
What is the primary function of the corticobulbar tracts?
What is the primary function of the corticobulbar tracts?
Which cranial nerves are involved in the corticobulbar tracts?
Which cranial nerves are involved in the corticobulbar tracts?
What is the percentage of axons that cross the midline in the pyramids of the corticospinal tracts?
What is the percentage of axons that cross the midline in the pyramids of the corticospinal tracts?
What is the term for the crossing of axons over to the opposite side of the spinal cord in the corticospinal tracts?
What is the term for the crossing of axons over to the opposite side of the spinal cord in the corticospinal tracts?
What is the region of the spinal cord where the axons in the anterior corticospinal tracts synapse on lower motor neurons?
What is the region of the spinal cord where the axons in the anterior corticospinal tracts synapse on lower motor neurons?
What is the name of the diagrammatic representation of the primary motor cortex corresponding to specific regions of the body?
What is the name of the diagrammatic representation of the primary motor cortex corresponding to specific regions of the body?
What is the primary function of the corticospinal pathway?
What is the primary function of the corticospinal pathway?
What is the term used to describe the system that includes the corticospinal pathway?
What is the term used to describe the system that includes the corticospinal pathway?
How many descending tracts are found in the corticospinal pathway?
How many descending tracts are found in the corticospinal pathway?
Where do the axons of the pyramidal cells synapse?
Where do the axons of the pyramidal cells synapse?
What structure do the corticobulbar tracts, lateral corticospinal tracts, and anterior corticospinal tracts enter?
What structure do the corticobulbar tracts, lateral corticospinal tracts, and anterior corticospinal tracts enter?
What is the term used to describe the region where the corticospinal pathway emerges on either side of the midbrain?
What is the term used to describe the region where the corticospinal pathway emerges on either side of the midbrain?
