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:  

Graded potentials occur along the axon of a neuron

Which of theses statements is true?

Which structure is visible at #10 below:  

Extra Credit Based on what you know about the relationship between joint stability and joint flexibility, which of these joint types is likely to be least stable?

You hear on the news of a terrible plane crash that happened where the only survivor had 3rd degree burns on 36% of their body.  Based on the rule of nines and the chart given below, which of these is possible: