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Write letter in space provided. Which does not occur during positive feedback in the nervous system?    a. Membrane depolarization    b. Increased sodium permeability    c. Opening of sodium channels    d. Membrane hyperpolarization    e. More membrane depolarization

Place the events that occur at the chemical synapse in the proper sequential order by writing the letters only in the space provided below.  Only use the letters once.      A. Depolarization of the plasma membrane of the presynaptic neuron terminal.     B. Opening of chemically-regulated gates on the postsynaptic cell.     C. Fusion of neurotransmitter-containing synaptic vesicles with the plasma membrane.     D. Change in membrane potential of postsynaptic cell.     E. An action potential occurs in a presynaptic cell.     F. Diffusion of neurotransmitter across the synaptic cleft.     G. Entry of calcium through voltage-regulated calcium gates into the presynaptic terminal.     H. Binding of neurotransmitter to specific receptors on the postsynaptic cell.       I. Exocytosis of synaptic vesicle contents.       J. Inactivation of the neurotransmitter.

If a human is lost at sea, would drinking seawater be a good or bad idea to survive?  Please state good or bad and then explain using physiological principles and terminology with which you have encountered in the course so far. 

Local anesthetics often work by reversibly binding to specific sites within the ___________.  Be specific.

Please put all answers in the space provided. 1. What is the value of the quantum in the relevant portion of the figure shown below? _________ 2. What specifically are the purple structures representing in the figure below? __________  

Regarding body fluids, the extracellular compartment consists of the interstitial fluid and the ________.

Write answer in space provided. One possible fate of neurotransmitters after binding and release from the postsynaptic membrane is _______.

Serotonin, GABA, and glutamate are all specific examples of ________________.

Write letter in space provided. All cells share which of the following properties with neurons?    a. A threshold potential    b. A resting membrane potential    c. An ability to open Na+ gates    d. All of those mentioned are correct.    e. None of those mentioned is correct.

What specific type of chemical synapse is being represented by the two presynaptic neurons in this figure? ______ Please put answer in the space provided.