Neurotransmission (Synaptic transmission)

Neurons communicate with neighbouring neurons in groups called...

• neural networks

• ganglia

• nuclei

• neural parties

The tiny gaps between neighbouring neurons is called the...

• synaptic cleft

• vesicle

• transporter molecule

• terminal button

Signals within neurons are transmitted...

• electrically

• chemically

Signals between neurons are transmitted

• electrically

• chemically

When an action potential reaches the terminal button 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

Neurotransmitter molecules diffuse across the synapse before binding to ...... on the post synaptic cell

• receptors

• schwann cells

• the nodes of Ranvier

• the axon hillock

Some times neurotransmitters make the postsynaptic cell more likely to fire, this is called an ........ effect.

• excitatory effect

• inhibitory effect

Sometimes neurotransmitters make the postsynaptic cell more less to fire, this is called an ........ effect.

• excitatory

• inhibitory

Excitation occurs when a neurotransmitter binds to a receptor and brings about

• depolarisation

• hyperpolarisation