Name the structures of the outer, middle, and inner ears, and give the general function of each structure and each group of structures.

The basic receptors in the internal ear are the (a) utricles, (b) saccules, (c) hair cells, (d) supporting cells, (e) ampullae.

Multiple ChoiceMore than one choice may apply.Sounds entering the external acoustic meatus are eventually converted to nerve impulses via a chain of events includinga. vibration of the eardrum.b. vibratory motion of the ossicles against the oval window.c. stimulation of hair cells in the spiral organ of Corti.d. resonance of the cupula.

Multiple ChoiceMore than one choice may apply.Which of the following are paired incorrectly?a. Cochlear duct—cupulab. Vestibule—maculac. Ampulla—otolithsd. Semicircular duct—ampulla

Multiple ChoiceMore than one choice may apply.Movement of which structure triggers bending of hairs of the hair cells in the spiral organ of Corti?a. b. c. d.

Sylvia Marcus, age 70, recently had surgery for otosclerosis. The operation was a failure and did not improve her condition. What was the purpose of the surgery, and exactly what was it trying to accomplish?

Sound waves hitting the eardrum set it into motion. Trace the pathway of vibrations from the eardrum to the spiral organ of Corti, where the hair cells are stimulated.

Otoliths (ear stones) area. a cause of deafness,b. a type of hearing aid,c. important in equilibrium,d. the rock-hard petrous part of the temporal bones.

The structure that allows pressure in the middle ear to be equalized with atmospheric pressure is thea. pinna,b. pharyngotympanic tube,c. tympanic membrane,d. oval window.