Post-text assignments

Date: 2015-10-07; view: 385.

1 Describe the structure of the human ear using the picture in the text

2 Answer the questions:

1. What is called the pinna?

2. What are the ossicles? What is the function of the ossicles?

3. What is the function of the Eustachian tube?

4. What are the systems of inner ear?

5. What is the purpose of the vetibular system?

6. What is the cochlea?

3 Translate the following:

1. Vision and smell are extraordinary senses, but they do not match in complexity the ear's process of turning minute waves of sound pressure from air molecules banging against the eardrum into the neural signals that get sent to the brain and interpreted as sound.

2. Lying beneath the outermost part of the ear canal are glands that produce earwax or cerumen.

3. The relative difference in the area of the tympanic membrane and the much smaller oval window lying beneath the stapes footplate allows for a concentration of the pressure wave much the way a spiked heel on a shoe concentrates force compared to a flat heel.

4. It is within the cochlea that the most common type of hearing loss, sensory hearing loss, occurs when exposure to loud noise or diseases cause the destruction of many hundreds of these delicate hair cells.

5. Once the sound waves, balance and equilibrium information is encoded into neural signals by the inner ear, the neural impulses are sent to the brain along a nerve fiber bundle called the vestibulo-cochlear nerve, sometimes called the acoustic nerve

6. In the brain's central auditory cortex, the neural impulses are interpreted as sound based on our learning and cognitive processes associated with our auditory experiences.