neurons and synaptic transmission

Question 1

synaptic transmission is a method of neurone communicating with each other relaying information to the CNS across

Answer 1

sensory neurons and carrying out responses dictated by the brain through sending information to effectors via motor neurons

Question 2

synaptic transmission 1
an action potential arrives at the presynaptic membrane causing depolarisation through the opening off

Answer 2

voltage dependent calcium ion channels and the consequent influx of calcium ions

Question 3

synaptic transmission 2
the increased concentration of calcium ions with the membrane causes the vesicles containing neurotransmitters to fuse with the

Answer 3

presynaptic membrane and release their contents into the synaptic cleft through exocytosis

Question 4

synaptic transmission 3
the neurotransmitter diffuses across the synaptic cleft down a concentration gradient and binds to complementary receptors on the spot synaptic membrane this can result in

Answer 4

a inhibitory or excitatory effect in the post synaptic membrane

Question 5

synaptic transmission 4
the resultant action potential will then be transmitted along the axon of the following neuron resulting in a

Answer 5

cascade of neurotransmission

Question 6

inhibitory transmitters ie serotonin reduce the differences across the post synaptic membrane through the closure of the voltage dependent sodium ion channels reducing

Answer 6

the likelihood that an action potential will be generated

Question 7

excitatory transmitters ie dopamine
increase the potential diffrence across the postsynaptic membrane through triggering the opening of more voltage dependent sodium ion channels increasing

Answer 7

the likelihood that an action potential will be generated