The external ear consists of an auricle, external acoustical pass and an eardrum. The auricle, like a locator, catches sound fluctuations, concentrates them and directs to external acoustical pass. This function is especially well developed at some kinds animal (dogs, cats, bats) which thanks to reflex management of an auricle have a definition of a site of a source of a sound. buy doxycycline online no prescription 8.животное at which the conditioned reflex is developed, should be healthy;? Thanking нейронам a visual bark there is a basic analysis of the visual information to obligatory participation of columns; here there are exciting and brake zones. Binocular sight is provided at the expense of activity коркового the end of the visual analyzer, in one point symmetric fields of vision on the right and at the left are presented.