Test 3 Review

Front

What may cause involuntary movements in the body?

Back

Too much excitation in the basal ganglia.

Front

What is triggered when a critical threshold of depolarization is met in the cell body?

Back

An impulse known as the action potential.

Front

Which cranial nerves are responsible for closing the nasal cavity during swallowing?

Back

Glossopharyngeal and Vagus.

Front

What is the motor control pathway that involves multiple synapses and helps control muscle tone, balance, and refine movement?

Back

Indirect pathway.

Front

What part of the neuron has receptors for detecting neurotransmitters?

Back

Dendrite.

Front

What is the role of the basal ganglia in movement?

Back

It helps regulate voluntary motor control and involuntary movements.

Front

Define action potential in the context of neuron function.

Back

A rapid rise and fall in voltage or membrane potential across a cellular membrane.

Front

What is the function of the glossopharyngeal nerve?

Back

It is involved in swallowing and the gag reflex, and it helps close the nasal cavity.

Front

What is the significance of the indirect pathway in motor control?

Back

It modulates and refines motor commands to ensure smooth and coordinated movements.

Front

How do dendrites contribute to neuron communication?

Back

They receive signals from other neurons through neurotransmitter receptors.