Lec7

Question 1

Ionotropic receptors

Answer 1

Opens ion channels after neurotransmitter binds

Fast

Signal transmission

Question 2

Metabotropic receptors

Answer 2

Slow channels

Neuronal modulation

Question 3

Advantages of chemical synapses over electrical synapses

Answer 3

Amplify current flow

Can either be excitatory or inhibitory

One-way-transmission-electrical are usually two-way

Chemical synapses are modifiable- plasticity

Question 4

How do chemical synapses amplify current flow

Answer 4

Depending on the number of vesicles released, number of active zones, amount of neurotransmitter and binding sites

Question 5

Neuromuscular junction

Answer 5

Synapse of an axon terminal of a motoneuron with the motor end plate

Question 6

Motor end plate

Answer 6

Highly excitable region of membrane in a muscle fiber responsible for initiating action potentials

Question 7

Endplate potential (EPP)

Answer 7

Postsynaptic potential induced at the neuromuscular junction (type of EPSP)