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IPFS News Link • Science

Mammals Were Not The First To Be Warm-Blooded

• arclein

The inner ear is not only the organ of hearing, but also houses the organ of balance: the semicircular canals. The three semicircular canals of the inner ear are oriented in the three dimensions of space and are filled with a fluid that flows in the canals as the head moves and activates receptors to tell the brain the exact three-dimensional position of the head and body. The viscosity, or runniness, of this fluid (called the endolymph) is of paramount importance for the balance organ to efficiently detect head rotation and aid balance.