nerve can regenerate at which of the following rates

[Oak]

During an accident in a wood shop, an individual sustains a deep cut that severs the median nerve at the wrist. The nerve is promptly surgically reconnected. Under optimal circumstances the nerve can regenerate at which of the following rates?

A. 1 mm/day
B. 5 mm/day
C. 2 mm/week
D. 1 mm/month
E. 5 mm/month

[bharat]

Originally Posted by Oak

During an accident in a wood shop, an individual sustains a deep cut that severs the median nerve at the wrist. The nerve is promptly surgically reconnected. Under optimal circumstances the nerve can regenerate at which of the following rates?

A. 1 mm/day
B. 5 mm/day
C. 2 mm/week
D. 1 mm/month
E. 5 mm/month

I will go for A. 1 mm/day (Alikati Gaf hai-- well i remember my physiology techer giving a example of median nerve regeneration after an accident involving the brachial plexus ,well this is also median nerve so i will go for A. 1mm/day)

[Oak]

Originally Posted by Oak

During an accident in a wood shop, an individual sustains a deep cut that severs the median nerve at the wrist. The nerve is promptly surgically reconnected. Under optimal circumstances the nerve can regenerate at which of the following rates?

A. 1 mm/day
B. 5 mm/day
C. 2 mm/week
D. 1 mm/month
E. 5 mm/month

Thats right bharat the correct answer is A. Following transection of a nerve with subsequent close surgical approximation of the two cut ends, the nerve can regrow down the nerve trunk at the rate of about 1 mm/day under optimal conditions.

The process typically involves formation of several nerve sprouts from which one becomes dominant. Interestingly, while there is almost always some degree of "miswiring" during the reconnection, the brain adapts as the newly reinnervated muscles are used, and eventually usually automatically provides the appropriate signals to perform a desired task.

In the absence of a nerve trunk to grow down, the sprouting process can cause the formation of painful traumatic neuromas as the nerve sprouts form a knotted mass of sensitive nerve fibers.