The ear works as an acoustic shell that captures sounds and directs them to the auditory canal. Sound waves make the eardrum vibrate, moving the hammer bone, which in turn vibrates the anvil bone, which vibrates the stirrup bone. These ossicles function as amplifiers of vibrations. The base of the stirrup bone connects to a region of the cochlea membrane called the oval window, and makes it vibrate, communicating the vibration to the cochlear liquid. The movement of this liquid makes the basilar membrane and the sensory cells vibrate. The hairs of these cells, when lightly touching the tectorial membrane, generate nerve impulses that are transmitted by the auditory nerve to the auditory center of the cerebral cortex. a) I, II, III, IV, V and VI are correct. b) I, II, III and IV are correct. c) II, III, IV, V and VI are correct. d) I, III, IV, V and VI are correct.
The ear works as an acoustic shell that captures sounds and directs them to the auditory canal. Sound waves make the eardrum vibrate, moving the hammer bone, which in turn vibrates the anvil bone, which vibrates the stirrup bone. These ossicles function as amplifiers of vibrations. The base of the stirrup bone connects to a region of the cochlea membrane called the oval window, and makes it vibrate, communicating the vibration to the cochlear liquid. The movement of this liquid makes the basilar membrane and the sensory cells vibrate. The hairs of these cells, when lightly touching the tectorial membrane, generate nerve impulses that are transmitted by the auditory nerve to the auditory center of the cerebral cortex. a) I, II, III, IV, V and VI are correct. b) I, II, III and IV are correct. c) II, III, IV, V and VI are correct. d) I, III, IV, V and VI are correct.