Why may neural repair be difficult in the mammalian CNS?
A. The adult nervous system makes too much of the chemical for growth, so the cell does not "know" in which direction to grow.
B. The immune cells necessary for protection of the neuron during growth are no longer in the vicinity.
C. Scar tissue may block the original pathway.
D. Glial cells are absent.
Answer: C
You might also like to view...
Katherine wants to quit smoking. The first therapist she visits suggests that she can help her quit by using a rapid smoking technique. If she agrees to this technique, what will happen to Katherine?
a. She will be given tokens for every cigarette she smokes. b. She will be shown increasingly more disgusting pictures of the lungs of smokers. c. She will smoke a pipe with flavored tobacco. d. Smoke will be blown into her face as she smokes a cigarette.
Hull defined ____ as the number of reinforced pairings between a stimulus and a response.?
a. ?reaction potential b. ?habit strength c. ?drive d. ?operant level