Gravity causes people to need strong bones to support their weight. Strong bones spend time adding calcium to their structure, and less time growing longer.
It an environment with less gravity, bones will grow longer and not be as strong - unless they are exercised. Future space exploration must include facilities which promote healthy bone development, especially in the young.
Myelinated nerves are white, and composes the white matter of the brain and spinal cord they also are able to pass an action potential down an axon much faster; Unmyelinated nerves are gray, and composes the gray matter of the brain and spinal cord. These nerves transmit signals much slower
Parasympathetic nervous system
why* for that lack of gravity lets the spinal column expand end gaining inches
No because a spinal cord is apart of your body. !!!!
because they are
Yes,because every nerve's connected to the spinal cord...
Essentially, when a spinal tap is given, a needle is inserted into the spinal canal in the lumbar area, medicine (or an anesthetic) is inserted directly into the cerebrospinal fluid (CSF). Numbness is usually immediate. However, in an epidural, a hollow needle and a catheder are inserted into space between the spinal column and the outer membrane of the spinal cord (EPIDURAL space). Hence the name "epidural".
AnswerBecause a reflex action is automatic and does not involve a thought process.Edit: A reflex action only has to go to the spinal cord and then back to the limb, whereas a voluntary reaction has to go to the brain to be processed and therefore takes longer.
Because when standing up and bending over to touch your toes gravity is pushing down directly upon your lower spinal column, and less stress is placed upon your lower spinal column when you are at the lowest possible point on the floor. I hope i helped!
spinal cord or brain are not solid because they have the system of canals which filled with fluid.
yes, because they have spinal cords.
spinal cord because you can be paralyzed or possibly even die.