00:01 So to conclude our lecture on the special senses, we have five special senses: smell, taste, vision, hearing and equilibrium. 00:14 Smell occurs when odorants bind to the olfactory receptor cells sending an impulse to the brain by way of the olfactory nerve. 00:25 Taste occurs when tastants bind to the gustatory receptor cells and our taste buds sending impulses to the brain by way of the facial, glossopharyngeal and vagus nerves. 00:40 Vision involves two types of photoreceptors found in the retina of the eye - rods and cones. 00:48 These send impulses to the brain by way of the optic nerve that exits out of the retina. 00:56 Hearing involves the propagation of sound waves by way of vibrations through structures in the ear. 01:04 These vibrations move hair cells in the cochlea that send impulses to the brain by way of the vestibulocochlear nerve. 01:14 Also in the ear, equilibrium involves the vestibular apparatus. 01:20 Hair cells in the organs of this structure including the utricle, saccule and semicircular canals send impulses to the brain by way of the vestibulocochlear nerve. 01:35 This concludes our lecture on the special senses. 01:39 Thank you for listening.
The lecture Special Senses: In a Nutshell (Nursing) by Jasmine Clark, PhD is from the course Special Senses – Physiology (Nursing).
What are the special senses?
Which statement best describes equilibrium?
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