MadSci Network: Anatomy
Query:

Re: How do you keep your balance?

Date: Fri Mar 9 08:07:58 2001
Posted By: Aditya Hernowo, Medical student, Department of Anatomy, Gadjah Mada Medical School
Area of science: Anatomy
ID: 983823844.An
Message:

We maintain our balance by these ways:
1. Visual; we will be able to keep our balance by interpreting the visual 
           perception in the visual cortex and then associating it to
           area 40. From here, the "total interpretation" will result in
           activation of motoric cortex and then from here the information 
           passed through cerebellum (center of balance)to our motoric
           organs (muscles of the limbs)
2. Vestibular; movement of endolymph inside our vestibule of inner ear
               will result in reposition of otoliths that are located
               in  macula sacculi & macula utriculi. This event will cause
               end-receptor of these sensing apparatus stimulated and the 
               impulse will eventually reach the centre of balance and 
               the subsequent events will be similar to the aforementioned.
3. Proprioception; There is a kind ok neuronal receptor which is located 
                   in the joint that monitor the change of body position
                   time after time. The change of body position such as
                   in walking will cause the stimulation of joints of knees
                   hips, elbows, shoulders,and this information will be 
                   sent through proprioception tract which is located in
                   the dorsal column of spinal cord named columna dorsalis.
                   The subsequent events will be similar in some ways to
                   the afore mentioned.
Ref: Guyton & Hall. TEXTBOOK OF MEDICAL PHYSIOLOGY, 10th ed. 


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