Ch 14 Dr. Mon

Front

Where is the primary motor cortex located?

Back

The primary motor cortex is located in the frontal lobe.

Front

What results from damage to dopamine-secreting neurons in the substantia nigra?

Back

Parkinson’s disease results from damage to dopamine-secreting neurons in the substantia nigra and includes symptoms of 'lead pipe' rigidity.

Front

What is not a function of muscle spindles?

Back

Sensing tension during a muscle contraction is not a function of muscle spindles.

Front

Which area of the brain is responsible for the conscious initiation of movement?

Back

The primary motor cortex is responsible for the conscious initiation of movement.

Front

What does hemiplegia refer to?

Back

Hemiplegia refers to the loss of movement on one side of the body.

Front

What is the role of the basal ganglia in movement?

Back

The basal ganglia are involved in the regulation of voluntary motor movements, procedural learning, and routine behaviors.

Front

What is the function of muscle spindles?

Back

Muscle spindles sense stretch and speed of stretch of muscle, providing feedback for muscle tone and reflexes.

Front

What is the significance of the premotor cortex?

Back

The premotor cortex is involved in planning and coordinating movements before they are executed.

Front

What is intention tremor?

Back

Intention tremor is a type of tremor that occurs during purposeful movement, often associated with cerebellar dysfunction.

Front

What is the difference between upper motor neurons and lower motor neurons?

Back

Upper motor neurons originate in the brain and project to lower motor neurons in the spinal cord, which directly innervate muscles.