HEARING QUIZ (10 pts.): Bio L104, FALL 2012 Name:_____________________________ SOUND WAVE A SOUND WAVE B SOUND WAVE Cpressure1. Which sound wave above has the highest amplitude? ____A___ 2. Which sound wave above has the highest frequency? ____C______3. Which sound wave above would you perceive as having the highest pitch? __C______4. You would perceive a 1,000 Hertz, 35 decibel sound wave as ___quieter__________ than a 1,000 Hz, 70decibel sound wave. Circle one: louder higher pitched quieter lower pitched5. When a hair cell’s stereocilia are bent towards the tallest row, the hair cell’s plasma membrane is ____deploarized________________ and auditory neuron firing rate ______goes up__________ .a. Depolarized, goes upb. Depolarized, goes downc. Hyperpolarized, goes upd. Hyperpolarized, goes down6. Describe a function of the middle ear: Directs sound waves from ear drum to watery fluid of the inner ear, dampen vibrations if too loud7. On the diagram of a dog ear below, do the following: (1 pt each)a. Label the structure that contains inner and outer hair cells b. Show the location of the oval windowc. Label the ear drumd. Label an ossiclePressureHEARING QUIZ (10 pts.): Bio L104 ANSWERS IN BOLD SOUND WAVE A SOUND WAVE B SOUND WAVE Cpressure1. Which sound wave above has the highest amplitude? A2. Which sound wave above has the highest frequency? C3. Which sound wave above would you perceive as having the highest pitch? C4. You would perceive a 1,000 Hertz, 35 decibel sound wave as _____________ than a 1,000 Hz, 70decibel sound wave. Circle one: louder higher pitched quieter lower pitched5. When a hair cell’s stereocilia are bent towards the tallest row, the hair cell’s plasma membrane is ____________________ and auditory neuron firing rate ________________ .a. Depolarized, goes upb. Depolarized, goes downc. Hyperpolarized, goes upd. Hyperpolarized, goes down6. Describe a function of the middle ear: Two options:- For loud sounds, to dampen vibrations before they reach the delicate inner ear7. On the diagram of a dog ear below, do the following: (1 pt each)e. Label the structure that contains inner and outer hair cells (the cochlea)f. Show the location of the oval windowg. Label the ear drumh. Label an ossiclePressureinner and outer hair cells insnail-shaped cochleaOval window lies under base of last ossicleossiclesear