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Author Archives: Anonymous

If a human is lost at sea, would drinking seawater be a good…

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. 

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Describe the basic structure of the plasma (cell) membrane. …

Describe the basic structure of the plasma (cell) membrane.  Include all of the important components that are found within or associated with the plasma membrane.  Be specific.

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Serotonin, GABA, and glutamate are all specific examples of…

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

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Two solutions that have the same total concentration of solu…

Two solutions that have the same total concentration of solutes are said to be ________ to one another.  Please use specific physiological terminology.

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Regarding body fluids, the extracellular compartment consist…

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

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Write letter in space provided. Which of the following proce…

Write letter in space provided. Which of the following processes is not an example of carrier-mediated transport?    a. Facilitated diffusion    b. Osmosis    c. Active transport    d. All of the processes mentioned are carrier-mediated.

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Write letter in space provided. Which of the following is no…

Write letter in space provided. Which of the following is not a characteristic of electrical synapses?    a. The presence of a significant synaptic delay     b. Conduction is bidirectional     c. Transmission occurs through cell-to-cell contact      d. They are found in cardiac muscle

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Write letter in space provided. Hyperpolarization of the pos…

Write letter in space provided. Hyperpolarization of the postsynaptic membrane due to inhibitory neurotransmitters would be produced by the inward opening of which of the following channels and the subsequent diffusion of the appropriate ion?  Think carefully.    a. sodium channels    b. potassium channels    c. chloride channels    d. calcium channels

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Upon reaching the ________ potential, the action potential w…

Upon reaching the ________ potential, the action potential will occur in an “all” fashion.

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Write letter in space provided. Which of the following subst…

Write letter in space provided. Which of the following substances is most likely to passively diffuse across the plasma membrane by diffusing directly through the bilayer?  Think about the composition of the membrane.    a. A positively charged ion    b. A hydrophilic molecule    c. A negatively charged ion    d. A hydrophobic molecule

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