Spinal cord injuries often leave a person permanently paralyzed.?

Question

Spinal cord injuries often leave a person permanently paralyzed. What does this tell you about the cell cycle in tissues of the spinal cord?

Answer 1

That the cells cannot regenerate?

Answer 2

Mostly, bodily systems after an SCI (spinal chord injury) work in much the same way that they work without an SCI, because for most of the systems in the body, the spinal chord plays only an auxiliary role. The vagus nerves (which are not part of the spinal chord) control most the brain's interaction with vital systems, including the heart. An important exception is the respiratory system, which depends on the muscles in the chest to breathe. If the SCI disrupts spinal function too high in the neck (at about the level of the second or third vertebra below the skull), the chest muscles are paralyzed and suffocation results. All other muscles and sensory function are also paralyzed below a point roughly in line with the SCI. Other vital systems are less severely affected, but almost all show some dysfunction. I'm no doctor--just a student of anatomy . SCI requires help from a specialist.

Answer 3

The spinal cord is part of the central nervous system (CNS). Depending on the type of injury, the treatment may vary. The reason why the spinal cord does not regenerate is because the axons of the CNS do not contain Schwann cells. Schwann cells allow axons in the peripheral nervous system (PNS) to regenerate as long as the cell body was not damaged. (PNS attach the nerves from muscles and organs to the CNS.) There is stem cell research to "repair" the axons in the CNS, but nothing to-date.

Answer 4

After traumatic injury to the spinal cord, the cells in the vicinity of the injury respond by proliferating. This proliferative response in the central nervous system (CNS) is different from the proliferative response found in other tissues such as skin because it does not directly contribute to healing. In addition, because neurons have axons that interconnect distant parts of the CNS, the proliferative reaction to an injury is not necessarily confined to the immediate vicinity of the injury.

Answer 5

Yes such injuries can often leave a person paralyzed. It tells me that the cell cycle has greater limits than less complex arrangements of cells. That the cells as long as within the complex structure will under go normal cycles, once disrubted there is no replacement mechanism to direct cells to replace lost cells.

Answer 6

tHIS tells me that in the spinal cord, the routers of our nervous system lie, which when get damaged can't be repaired.

The upper part of the spine controls our upper part including head, arms, chest and lower half controls the lower including waist and legs.

Answer 7

that they dont rerjuvanate like other cells but the fact of the matter is that it really depends on the injury and the severity of it.