Chapter 15, Problem 10MC

Please ASAP. Thank you. 1. How is the threshold of sense such as hearing or touch usually defined? a.  At 50% correct response b.  At 10 % correct response c.  At 100% correct response d.  At 75% correct response 2. The cochlea separates sounds according to: a. The frequency (spectrum) of sounds b. The loudness of sounds c. The cochlea does not separate sounds according to their physical characteristics d. How fast sounds changes

EXPLAIN YOUR ANSWERS. 1. Jake was struck in the head during a baseball game. Which of the following could impair the sense of hearing if damaged?  2) Charlotte burned the top of her tongue on a hot slice of pizza. What type of taste bud was damaged?  3) From a very lighted area you entered a dark room, upon entering you see nothing but darkness. After a few seconds you can already see what’s in the surrounding. Explain what happen.   4) Your elderly neighbor wears hearing aids. Without them, he can't hear you knocking on his door. Do you think he wears the hearing aids for sensorineural deafness or conduction deafness? Explain your choice and differentiate between the causes of these two types of deafness.  5) Explain in terms of the physiology of the vestibular apparatus why astronauts may have difficulty with equilibrium in a weightless environment.

Highlight the correct one about the cochlear duct?a. It is part of the bony labyrinth.b. It is filled with perilymph.c. It contains hair cells that convert sound waves into nerveimpulses.d. It contains a spiral organ that rests on a vestibularmembrane