Wednesday, March 21, 2007

How Do The Ears Help Us To Keep Our Balance?

Our sense of balance largely depends on the vestibular system, which lies close to the cochlea in the inner ear and allows us to stand upright and walk in a straight line.

The vestibular system has two main parts: a group of three fluid-filled, semicircular canals, set at right angles to one another; and two vestibular sacs, also filled with fluid. Hair cells line the inside of the canals and sacs. As we move about, the fluid sloshes back and forth, pushing the hair cells to and fro. The movement of the hair cells triggers the release of nerve signals that inform the brain that the head is turning clockwise or counter-clockwise or tilting forward, backward, or to the side. Some of the hair cells are highly sensitive to the pull of gravity. Their signals help tell the brain how far we are from an upright position. From the vestibular system, the signals pass along the vestibular nerve to the cerebellum, at the back of the head. It sorts out messages from the inner ear and coordinates them with information from other parts of the body to tell us from moment to moment where we are in space, and whether we are standing, sitting, lying down, running, walking, or standing on our heads.

AddThis Social Bookmark Button


4 comments:

naem said...

thanks fo this info..i'm really dont aware about this..thanks a lot..

kemona bford mps said...

im not sure cause this is not what im studying for

Anonymous said...

Brilliant article and actually can assist with becoming familiar with the article much better.
My husband and i came here mainly because this site has been tweeted by a person I was following and i am delighted I made it here. [url=http://www.wayn.com/waynblog.html?wci=viewentry&entry_key=172890]Swiffer Coupons - Creative Ways To Save Money on Haircare[/url]
[url=http://www.incompany.com/blog.php?user=michelmccall511&blogentry_id=362977]What Are Swiffer Wet Jet coupons?[/url]

I have to declare you render quite a few excellent points and will certainly write-up a couple of choices to add on as soon as a day or two.

Anonymous said...

Exceptional piece of writing and certainly assists with learning the subject better.
My spouse and I came here seeing as this journal has been tweeted by a guy I was following and i am happy I made it here. [url=http://www.incompany.com/blog.php?user=michelmccall511&blogentry_id=363187]Incredible Discounts With Swiffer Wet Jet coupons[/url]
[url=http://swiffercouponsnow.com/7/save-money-with-printable-swiffer-coupons/]How are Promo Codes Different to Printable Swiffer coupons[/url]

Igenuinely have got to express you come up with various fantastic points and will probably post a a small number of tips to add in shortly after a day or two.