Neurons 2 quiz

The synapse is a junction between...

• a neuron and a neuron

• a neuron and a gland

• a neuron and a muscle

• all of the above

Most synapses use _____ signaling and send a _____ from the presynaptic to postsynaptic neuron.

• paracrine, hormone

• Gap junction, neurotransmitter

• paracrine, neurotransmitter

• Gap junction, hormone

chemical synapses are _____ versatile than electrical synapses, and ______

• less, bi-directional

• more, uni-directional

• more, bi-directional

• less, uni-directional

As the neurotransmitter is released from the presynaptic neuron, voltage-gated calcium channels _____, allowing calcium to move

• open, into the cell

• close, out of the cell,

• open, out of the cell

• close, into the cell

the neurotransmitter vesicles bind to receptors on the post synaptic neuron, and initiates a response. These receptors are an example of ____

• voltage-gated ion channels

• ligand-gated ion channels

• leak channels

Ionotropic receptors are ____ gated and are located ___ an ion channel

• ligand, on

• voltage, off

• voltage, on

• ligand, off

Neurotransmitters can be excitatory or inhibitory, the first would _____ the cell and the second would _____ the cell

• depolarize, hyperpolarize

• hyperpolarize, depolarize

• hyperpolarize, hyperpolarize

• depolarize, depolarize

Acetylcholine binds to ____ receptors:

• Cholinergic

• GABA receptors

• Adrenergic

• Glycine

Nicotinic receptors allow sodium to move _____

• into the cell

• out of the cell

Catecholamines are _____

• always excitatory

• always inhibitory

• both