Synapses

Question 1

Synapse:

Answer 1

A point of contact between two cells

Question 2

The two cells are:

Answer 2

The presynaptic cell and the postsynaptic cell

These may be 2 neurons, 2 muscle cells, or a neuron and a muscle cell

Question 3

Presynaptic neuron:

Answer 3

Regulates action potential production in the postsynaptic neuron

presynaptic neuron-axon terminal is part of synapse

Question 4

Postsynaptic neuron:

Answer 4

Postsynaptic terminal / postsynaptic membrane&raquo_space;> plasma membrane closest to axon terminal

one presynaptic neuron can have several synapses with the same postsynaptic neuron

Question 5

Where are synapses located?

Answer 5

At the cell body and dendrites of the postsynaptic neuron

Question 6

Types of synapse:

Answer 6

-Electrical synapses
-Chemical synapses

Question 7

Electrical synapses:

Answer 7

Axon terminal and postsynaptic neurons connected by gap junctions

directly produces an action potential

Question 8

Electrical synapse are common when:

Answer 8

-a fast response is needed
-synchronized responses

Question 9

Chemical synapses:

Answer 9

Axon terminal and postsynaptic are separated by the synaptic cleft

Question 10

Ligand:

Answer 10

Gated ion channels

Question 11

Synaptic Vesicles:

Answer 11

Stores neurotransmitters within the axon terminal prior to being released.