Synaptic Transmission

Question 1

What is involved in synaptic transmission?

Answer 1

Stored at the end of the presynaptic axon are vesicles containing neurotransmitters.
As the action potential travels down the axon terminal, it stimulates vesicles to release neurotransmitter molecules into the synapse.
Neurotransmitter molecules diffuse over the synaptic cleft over to the post synaptic membrane of the next neuron and bind with particular receptors that are activated by that particular neurotransmitter.
Most neurotransmitters can bind to various types of receptors.
The nature of receptor response varies across type.
This whole proves produces either exhibitory or inhibitory effects on the neuron

Question 2

Define synaptic transmission

Answer 2

Process by which a nerve impulse passed across the synaptic cleft from one neuron (pre synaptic) to another (post synaptic)

Question 3

What does the synapse include?

Answer 3

The end of the axon and the presynaptic neuron.
Membrane of the dendritic for cell body of the postsynaptic neuron.
The synaptic cleft.

Question 4

Explain the journey of a nerve impulse

Answer 4

Neurones transmit info both within the neurone and from one neurone to another
Dendrites of neurons receive signals from sensory receptors and other neurons
Signals cause electrical changes in the neuron that are interpreted in an area called the soma
If the signal coming from dendrites is strong enough then it travels to the next part of the neuron the axon
Info then travels along the axon towards the axon terminals in the form of an electrical signal known as action potential