Exploring the Animal Nervous System and Neuron Function

Mr. Anderson's video on the animal nervous system covers the brain's hemispheres, split brain experiments, and the function of neurons. It explains how neurons send messages through action potentials and synapses, detailing the role of sodium and potassium ions. The video also discusses neurotransmitters like GABA and how neural communication is akin to a voting system, with excitatory and inhibitory signals determining neuron firing.

Which hemisphere of the brain is primarily responsible for speech?

• Right hemisphere

• Neither hemisphere

• Left hemisphere

• Both hemispheres equally

What connects the two hemispheres of the brain?

• Medulla oblongata

• Cerebellum

• Thalamus

• Corpus callosum

In split-brain experiments, why can't a person verbally identify an object seen in the left field of view?

• The right hemisphere cannot produce speech

• The left hemisphere cannot produce speech

• The right hemisphere cannot process visual information

• The left hemisphere cannot process visual information

What is the basic unit of the nervous system?

• Axon

• Dendrite

• Synapse

• Neuron

What is the role of the sodium-potassium pump in neurons?

• To maintain the resting potential

• To connect neurons

• To transmit neurotransmitters

• To generate action potentials

What happens when sodium channels open in a neuron?

• Potassium flows out of the neuron

• Sodium flows into the neuron

• Potassium flows into the neuron

• Sodium flows out of the neuron

What is the voltage of a typical resting neuron?

• -70 millivolts

• -55 millivolts

• 70 millivolts

• 0 millivolts

What triggers the release of neurotransmitters at the synapse?

• Influx of chloride ions

• Influx of sodium ions

• Influx of calcium ions

• Influx of potassium ions

Which neurotransmitter is known to be inhibitory?

• Glutamate

• Dopamine

• Serotonin

• GABA

How do excitatory messages affect a neuron?

• They inhibit the release of neurotransmitters

• They have no effect on the neuron

• They make the neuron more likely to fire

• They make the neuron less likely to fire