General and local anthestics block action potential generation,
thereby rendering the nervous system quiescent while surgery is
performed. What specific process do anesthetics impair, and how does
this interfere with nerve transmission?

When admitted to the emergency room, John was holding his right hand,
which had a deep puncture hole in its palm. John was given a
anit-tetanus shot to prevent neural complications.  Tetanus bacteria
fester in the deep, dark wounds, but how do they travel in neural
tissue?


Rochelle developed multiple sclerosis when she was 27.  After eight
years she had lost a good portion of her ability to control her
skeletal muscles.  Why did this happen?

A 10 month old infant has an elarging head circumference and delayed
overall development.  She has a bulding anterior fontanel and her CSF
pressure is elevated.
(a) What are the possible cause(s) of an enlarged head?
(b) What tests might be helpful in obtaining information about this
infants problem?
(c)Showing the cerebral aqueduct to be constricted, which ventricles
or CSF-containing areas would you expect to be enlarged? Which would
likely not be visible?
(d) Respond to th same questions based on a finding of obstructed arachnoid villi.


Mrs. adams is ready to deliver her first baby.  Unhappily, the baby
appears to have myelomeningocele. Would a vaginal or
surgical(c-section) delivery be more appropriate and why?