Exam 45: Electrical Signals in Animals

The corpus callosum is a network of axons that connects the two hemispheres of the cerebrum.What do you hypothesize the primary function of the corpus callosum is?

Figure 45.1 -Which letter on Figure 45.1 corresponds to a large influx of Na⁺ ions into the cell?

Which of the following manipulations would reduce the release of neurotransmitter from a presynaptic neuron terminal?

How could you increase the magnitude of inhibitory postsynaptic potentials (IPSPs)generated at a synapse?

You are walking your dog at night in the forest.Your dog barks at a strange noise and you are startled.Which of the following physiological responses are most likely to occur?

If a disease or disorder interferes with learning and memory,which of the following should the mechanism of the disease should involve?

If a person were to have a stroke in the occipital lobe of the cerebrum,which of the following functions would most likely be affected?

If an action potential is triggered in a neuron,what must have happened?

The squid giant axon is approximately 500 μm in diameter (compared to 2μm for a typical human axon).Due to the size of the axon,________.

If twice as many inhibitory postsynaptic potentials (IPSPs)as excitatory postsynaptic potentials (EPSPs)arrive at a postsynaptic neuron in close proximity,is the integration of signals by the postsynaptic neuron likely to produce an action potential?

When your doctor triggers your patellar tendon reflex by tapping the front of your knee with a rubber hammer,what might she be assessing?

Which of the following statements about action potentials is FALSE?

Figure 45.1 -Which letter on Figure 45.1 corresponds to the action of the sodium-potassium pump and potassium leak channels?

Functional studies of the human brain have involved

If you experimentally increase the concentration of K⁺ inside a cell,while maintaining other ion concentrations as they were,what would happen to the cell's membrane potential?

Neurotransmitter is released

The depolarization phase of an action potential requires

Stem cell transplants may someday be used to treat Parkinson's disease.Researchers are hopeful that these cells would alleviate the symptoms of Parkinson's disease by

A large meal is likely to result in activity in which set of nerves?

Figure 45.1 -Which letter in Figure 45.1 corresponds to a large efflux of K⁺ ions from the cell?