Sam almost severed his arm in an accident.Which of the following statements explains why his doctors feel he will regain complete use of his arm?
A) Astrocytes will clean up the debris surrounding the area,making it possible for the axons to regrow.
B) Schwann cells in the peripheral nervous system can help guide the regrowth of neural branches,helping to ensure nervous system recovery.
C) Oligodendrocytes form a tube in the CNS that guides the regrowth of axons.
D) PNS neurons are mostly bipolar;thus,they are more easily regrown.

Question

Quizplus · Accepted Answer

Schwann cells in the peripheral nervous system can help guide the regrowth of neural branches, helping to ensure nervous system recovery. These cells provide a pathway for the regrowth of axons by producing growth factors and forming bands of Büngner, which act as a scaffold for the regenerating axons. This guidance is essential for proper reinnervation and function of the affected limb.

Sam Almost Severed His Arm in an Accident