Neuro Transmissions Quiz

What is the structure called where the signal reaches the end of the axon?

• Post-synaptic terminal

• Pre-synaptic terminal

• Synaptic terminal

• Synaptic cleft

What is the main function of electrical synapses?

• Allow direct ionic current transfer between cells

• Release neurotransmitters into the synaptic cleft

• Block the post-synaptic cell from firing

• Fine-tune the firing of the cells

What are the two main types of glutamate receptors?

• NMDAR and GABAb

• AMPAR and GABAb

• GABAa and GABAb

• NMDAR and AMPAR

What is the function of GABAa receptors?

• Block the post-synaptic cell from firing

• Send off a messenger protein to signal elsewhere in the cell

• Fine-tune the firing of the cells

• Open a pore that lets negative ions into the cell

What is the main function of inhibitory synapses?

• Excite the cell to spark an action potential

• Fine-tune the firing of the cells

• Prevent the brain from sending too many signals at once

• Repress signalling and block the post-synaptic cell from firing

What is the role of neurotransmitters in the synaptic cleft?

• Move to the edge of the cell and fuse with the cell membrane

• Attach to receptors and open ion channels

• Contain the information to be transmitted and release it into the synaptic cleft

• Fine-tune the firing of the cells

What is the main difference between electrical and chemical synapses?

• Chemical synapses allow direct ionic current transfer between cells

• Electrical synapses have wider synaptic clefts than chemical synapses

• Electrical synapses use neurotransmitters to send messages

• Chemical synapses have wider and more complex structures than electrical synapses

What is the function of NMDAR and AMPAR receptors when glutamate binds to them?

• Send off a messenger protein to signal elsewhere in the cell

• Open a channel in the cell membrane attached to the receptor

• Block the post-synaptic cell from firing

• Fine-tune the firing of the cells

What is the role of GABAb receptors in the cell?

• Open a pore that lets negative ions into the cell

• Send off a messenger protein to signal elsewhere in the cell

• Block the post-synaptic cell from firing

• Fine-tune the firing of the cells

Why is an inhibitory signal useful in the brain?

• To fine-tune the firing of the cells

• To prevent the brain from sending too many signals at once

• To excite the cell to spark an action potential

• To repress signalling and block the post-synaptic cell from firing