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For nerve cells which of the following is NOT true? A. One nerve (A) impinges on

ID: 26263 • Letter: F

Question

For nerve cells which of the following is NOT true?
A. One nerve (A) impinges on another (B) and triggers an action potential to form in B.
The action potential in B begins at the dendrite.
B. One nerve (A) impinges on another (B) and secretes GABA at the synapse. GABA
opens a chloride channel that inhibits B from firing
C. Two nerves one excitatory and one inhibitory (A, B) impinge on a third ( C ) and the
signals are integrated over the cell body.
D. The concentration of sodium channels is greater at the axon hillock
E. None

Explanation / Answer

B. One nerve (A) impinges on another (B) and secretes GABA at the synapse. GABA opens a chloride channel that inhibits B from firing