10.1 Synaptic transmission

The name of the specialised gap between 2 neurons

• Dendrites

• Terminal buttons

• Synaptic Vesicles

• Synapse

The part of the neuron which houses the neurotransmitters

• Dendrites

• Terminal buttons

• Synaptic Vesicles

• Synapse

The part of the neuron which contains the synaptic vesicles

• Dendrites

• Synaptic knob

• Synaptic Vesicles

• Synapse

When the action potential travels down the axon it reaches which part of the neuron?

• Dendrite

• Cell body

• Axon terminal

• Nucleus

What 3 things happen to the neurotransmitters when they get released into the synaptic gap?

• They diffuse across the synaptic gap

• They attach to receptor sites on the post synaptic dendrite via lock and key mechanism

• Any left over neurotransmitters gets taken back into pre-synaptic terminal button via re-uptake channels

• The axon takes it back in

What is housed in the synaptic vesicles?

• Hormones

• Neurotransmitters

• Proteins

• Dendrites

Signals along the neurons are transmitted...

• electrically

• chemically

Signals between neurons are transmitted

• electrically

• chemically

When an action potential reaches the axon terminal, it causes...

• vesicles to migrate towards and fuse with the cell membrane

• neurotransmitter molecules to bind to the receptor sites on the postsynaptic cell

• enzymes to breakdown leftover molecules of neurotransmitter in the synaptic cleft

• chloride ions to flood into the postsynaptic cell

Vesicles are tiny sacs or pouches in the presynaptic cell that contain

• sodium ions

• neurotransmitter molecules

• Schwann cells

• Nodes of Ranvier