Briefly describe the events that occur during the depolarizing phase of an action potential
What will be an ideal response
Voltage-gated Na+ channels open rapidly allowing Na+ to rush into the cell driven by both the electrical and chemical gradient. The inward rush of Na+ causes the membrane potential to become less negative, resulting in depolarization.
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The pH of the contents of the stomach lumen is considerably higher than that of interstitial fluid.
Answer the following statement true (T) or false (F)
Which glial cells possess phagocytic abilities?
a. astrocytes b. ependymal cells c. neurons d. microglia e. oligodendrocytes
Within smooth muscle cells, intermediate filaments are linked by dense ________ at points where they attach on the inner surface of the cell membrane.
Fill in the blank(s) with the appropriate word(s).
Which electrolyte is never secreted into the filtrate?
A. Chloride B. Potassium C. Calcium D. Sodium