In PNS nerve fiber regeneration, how is a growing axon directed to its original destination?
A. It grows within a regeneration tube.
B. The axonal terminals grow towards the soma until the two severed fragments are reunited.
C. The axon grows a collateral that is directed by growth factors secreted by the postsynaptic neuron.
D. Injured Schwann cells produce a trail of prostaglandins to the original destination.
A. It grows within a regeneration tube.
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A. YXP B. GRH C. MDF D. SRY
The pathway from the superior and inferior vena cavae, through the right side of the heart to the lungs is called the
A. coronary circulation. B. systemic circuit. C. hepatic-portal system. D. pulmonary circuit.
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A. 7.00. B. 7.25 - 7.35. C. 7.35 - 7.45. D. 7.45 - 7.55. E. 6.80 - 7.20.
The study of tissues is called
A. zoology. B. epidemiology. C. anatomy. D. cytology. E. histology.