In PNS nerve fiber regeneration, how is a growing axon directed to its original destination?
A. Injured Schwann cells produce a trail of prostaglandins to the original destination.
B. It grows within a regeneration tube.
C. The axonal terminals grow towards the neurosoma until the two severed fragments are reunited.
D. The axon grows a collateral that is directed by growth factors secreted by the postsynaptic neuron.
Answer: B
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Answer the following statements true (T) or false (F)
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The superficial layer of the perineum is called (the)
A) pelvic triangle. B) urogenital diaphragm. C) anal triangle. D) urogenital triangle. E) both urogenital triangle and anal triangle.
Which phases of a heartbeat shown in the diagram involve repolarization of the heart's four chambers?
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