Exam 48: Neurons, Synapses, and Signaling

The fastest possible conduction velocity of action potentials is observed in

The major inhibitory neurotransmitter of the human brain is

The botulinum toxin reduces the synaptic release of

For a neuron with an initial membrane potential at -70 mV, an increase in the movement of potassium ions out of that neuron's cytoplasm would result in

A common feature of action potentials is that they

The primary neurotransmitter from the parasympathetic system that influences its autonomic targets is

An example of ligand-gated ion channels is

Ionotropic receptors are found at synapses operated via

Assume that excessive consumption of ethanol increases the influx of negative chloride ions into "common sense" neurons whose action potentials are needed for you to act appropriately and not harm yourself or others. Thus, any resulting poor decisions associated with ethanol ingestion are likely due to

The point of connection between two communicating neurons is called

Most of the neurons in the human brain are

The major excitatory neurotransmitter of the human brain is

Neural transmission across a mammalian synaptic gap is accomplished by

In the communication between a motor neuron and a skeletal muscle,

For the following questions, refer to the graph of an action potential. -The membrane's permeability to sodium ions is at its maximum at label

A chemical that affects neuronal function but is not stored in presynaptic vesicles is

The somatic nervous system can alter the activities of its targets, the skeletal muscle fibers, because

Saltatory conduction is a term applied to

After the depolarization phase of an action potential, the resting potential is restored by

The heart rate decreases in response to the arrival of