Suppose that a new virus is discovered that specifically infects motor neurons. Assume that this virus enters neurons in conjunction with choline molecules. Once inside the cell, the virus enters the nucleus and replicates. Which direction describes the axonal transport route taken by this virus?
What will be an ideal response?
retrograde transport
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An adult human kidney typically contains ________ renal pyramid(s).
A. 16 to 24 B. 1 C. 2 to 5 D. 8 to 15 E. 30 to 40
Which choice describes the countercurrent mechanism of the nephron loop?
A. Water moves into the ascending limb; sodium moves out of the ascending limb B. Water moves out of the descending limb; sodium moves out of the ascending limb C. Water moves into the descending limb; sodium moves out of the descending limb D. Water moves out of the ascending limb; sodium moves into the ascending limb
_______________ transport is required to move a substance across a membrane against a concentration gradient
Fill in the blank with correct word.
Oligodendrocytes serve the same purpose in the CNS that satellite cells do in the PNS.
Answer the following statement true (T) or false (F)