nerve impluse question????

Human Anatomy, Physiology, and Medicine. Anything human!

Moderators: Leonid, amiradm, BioTeam

Post Reply
User avatar
bio_pony91
Garter
Garter
Posts: 7
Joined: Mon Jun 12, 2006 7:48 pm
Location: TEXAS

nerve impluse question????

Post by bio_pony91 » Mon Jun 12, 2006 8:44 pm

i am quite confused on this.... :?:

how does just a light touch stimulate nerve impulse? and then how does the impulse get to the brain and what part of the brain recieves it????

pleeeeez help me :shock:

daniel.kurz
Coral
Coral
Posts: 167
Joined: Fri May 19, 2006 1:47 am

Post by daniel.kurz » Tue Jun 13, 2006 12:30 am

I can answer the second part of the question. It is transfered from axon which is part of the nerve cell to nerve cell in the form of an electron. It finally comes to the spinal cord. Now, there are times when the sensation is so severe that the spinal cord doesn't send the signal to the brain and simply sends a signal to the limb to move it. Otherwise it goes up the spinal cord into the cerebrum. It also enters the cerebellum. The cerebrum lets you know your hurt while the cerebellum makes the movement of the limb. It is unconcious thought that occurs in the cerebellum.

User avatar
bio_pony91
Garter
Garter
Posts: 7
Joined: Mon Jun 12, 2006 7:48 pm
Location: TEXAS

thanx

Post by bio_pony91 » Tue Jun 13, 2006 1:58 am

thank u i have wondered about that for a while thank ya :!: :D



but whoever else has an answer for the first part feel free to tell 8)
Last edited by bio_pony91 on Tue Jun 13, 2006 6:46 pm, edited 1 time in total.
Ashley Renee

medrace
Garter
Garter
Posts: 2
Joined: Tue Jun 13, 2006 7:44 am

Post by medrace » Tue Jun 13, 2006 7:59 am

Ok, I'll try: There are multiple types of mechanosensors located in human skin. Some are sensitive to pressure, some to the speed with which the pressure alternates (=vibration). What they have in common is that the frequency of the above mentioned electrical signal transmitted via the neural axon is proportional to the dimension of the stimulus.

D_Juggz
Garter
Garter
Posts: 18
Joined: Sat May 28, 2005 3:39 am

Post by D_Juggz » Tue Jun 13, 2006 11:05 am

Specifically the part of the brain the recieves the impulse of a soft touch is the sensory cortex. (part of the cerebellum) the motor cortex is used for movement.

The reason a light touch is felt as well as hard touch is because sensory nerves work because of stimulations called action potentials....google it. ;)

User avatar
bio_pony91
Garter
Garter
Posts: 7
Joined: Mon Jun 12, 2006 7:48 pm
Location: TEXAS

thank you all

Post by bio_pony91 » Tue Jun 13, 2006 3:06 pm

thanks dsgnon sry my kitten thomas got on the key board any way thank you
Ashley Renee

Post Reply

Who is online

Users browsing this forum: No registered users and 0 guests