Which major brain part is responsible for fine-tuning motor movements?

Match the channel or pump with it’s role in generating action potentials.

You have an itchy mosquito bite.  Which part of the brain is processing this sensation?

Many people have died from poisoning after eating puffer fish.  The reason for this is puffer fish tissue contains varying levels of tetradotoxin, a chemical which blocks voltage-gated Na+ channels.  Which of these would result from puffer fish poisoning? 

Which of these would cause muscle relaxation to occur?

What would happen to a muscle that ran out of ATP while contracted?

Large diameter axons conduct action potentials faster than small diameter axons.

Suppose you have discovered a new organism that has Ca2+/Mg2+ pumps (rather than Na+/K+ pumps) embedded in its plasma membrane.  Each time the pump cycles, three Ca2+ are pumped into the cell and three Mg2+ are pumped out of the cell.  Which of these statements would be true?

Define and describe the two mechanisms by which neurotransmitter can be removed from the synaptic cleft (4 pts).  Then give examples of a neurotransmitter that is removed by each mechanism (2 extra credit points).

Which type of neuron is pictured here: