1. Auditory Sense (Hearing) Sense organs: ear, cochlea Receptor cell: hair cell, cilia deflect w/sound wave Receptor mechanism: mechanically-gated cation channels allow depolarize in one direction, hyperpol in other Coding of intensity and direction: amount and direction of cilia bending, ear coordination Coding of pitch: which hair cells are deflected Pathway of conduction: CN VIII-medulla- thalamus-auditory cortex

2. *external ear (air) *middle ear (air) *inner ear (liquid) Overall anatomy of the human ear

4. vestibular cochlear tympanic

5. http://www.blackwellscience.com/matthews/ear.html http://www.innerbody.com/anim/ear.html

7. Equilibrium Sense organs: semicircular canals with ampullae and utricle and saccule with maculae Receptor cell: hair cell Receptor signal transduction mechanism: cilia with mechanically-gated cation channels allow depolarize in one direction, hyperpol in other Coding of intensity and direction: amount and direction of cilia bending Pathway of conduction: CNVIII-pons-cerebellum

9. The semicircular canals - detect rotational (angular) acceleration