If someone has a muscle cramp or spasm, a commonly discussed treatment is to consume a banana (or another food high in potassium). Why would this be a possible treatment for muscle cramps or spasms?
What will be an ideal response?
Potassium is a cation that leaves the cell during an action potential or depolarization of a muscle or nerve cell, and the muscle or nerve cell needs to move potassium back into the cell to allow the cell to repolarize and relax. If there is a deficiency in potassium, muscle and nerve cells may take longer to repolarize and therefore relax, so increasing your dietary intake of potassium may help cells repolarize quicker.
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The space between the presynaptic and postsynaptic neurons is called the synaptic knob
a. True b. False Indicate whether the statement is true or false
A semipermeable membrane encloses a solution of 10 mM NaCl and 5 mM KCl. This "cell" is placed into a solution of 6 mM CaCl2 and 6 mM NaCl
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A. is located deep to spongy bone in the diaphysis. B. is composed of tubular units called osteons. C. has a brace-like arrangement of trabeculae. D. is avascular. E. All of the choices are correct.