Chapter Seven Textbook Questions

Front

What is the role of the basal ganglia in movement control?

Back

The basal ganglia are involved in the regulation of voluntary motor movements, procedural learning, and routine behaviors. They help to inhibit unwanted movements.

Front

What happens when the basal ganglia are damaged?

Back

Damage to the basal ganglia can lead to reduced inhibition of the thalamus, resulting in involuntary movements, as seen in conditions like Huntington's disease.

Front

What is the function of the cerebellum?

Back

The cerebellum coordinates voluntary movements, balance, and motor learning. It contains more than half of the brain's neurons.

Front

What are saccades?

Back

Saccades are rapid movements of the eye that change the point of fixation. Inaccurate saccades can indicate dysfunction in the cerebellum.

Front

How does cold water affect fish movement?

Back

In cold water, fish can move rapidly but fatigue easily due to muscle stiffness and reduced metabolic efficiency.

Front

What is the primary target of the motor cortex's axons?

Back

The motor cortex sends its axons primarily to the medulla and spinal cord, which then relay signals to the muscles.

Front

What is the significance of the thalamus in motor control?

Back

The thalamus acts as a relay station for motor signals from the basal ganglia and cerebellum to the motor cortex.

Front

What is the relationship between the cerebellum and motor learning?

Back

The cerebellum plays a crucial role in motor learning by fine-tuning movements and adapting them based on feedback.

Front

What are the symptoms of cerebellar dysfunction?

Back

Symptoms may include poor coordination, balance issues, and problems with fine motor skills, such as those seen in the finger-to-nose test.

Front

What is the role of inhibitory axons in motor control?

Back

Inhibitory axons help to regulate and control motor output, preventing excessive or unwanted movements.