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- Occupational Hearing Loss Frequent exposure to loud noise of a particular pitch can cause loss of hair cells in the part of the cochlea that responds to that pitch. People who work with or around noisy machinery are at risk for such frequency-specific hearing loss. Taking precautions such as using ear plugs to reduce sound exposure is important. Noise-induced hearing loss can be prevented, but once it occurs it is irreversible because dead or damaged hair cells are not replaced. FIGURE 33.24 shows the threshold decibel levels at which sounds of different frequencies can be detected by an average 25-year-old carpenter, a 50-year-old carpenter, and a 50-year-old who has not been exposed to on-the-job noise. Sound frequencies are given in hertz (cycles per second). The more cycles per second, the higher the pitch. FIGURE 33.24 Effects of age aria occupational noise exposure. The graph shows the threshold hearing capacities fin decibels) for sounds of different frequencies (given in hertz) in a 25-year-okj carpenter (blue), a 50-year-old carpenter (red), and a 50-year-otd who did not have any on-the-job noise exposure (brown). 2. How loud did a 1,000-hertz sound have to be for the 50-year-old carpenter to detect it?Occupational Hearing Loss Frequent exposure to loud noise of a particular pitch can cause loss of hair cells in the part of the cochlea that responds to that pitch. People who work with or around noisy machinery are at risk for such frequency-specific hearing loss. Taking precautions such as using ear plugs to reduce sound exposure is important. Noise-induced hearing loss can be prevented, but once it occurs it is irreversible because dead or damaged hair cells are not replaced. FIGURE 33.24 shows the threshold decibel levels at which sounds of different frequencies can be detected by an average 25-year-old carpenter, a 50-year-old carpenter, and a 50-year-old who has not been exposed to on-the-job noise. Sound frequencies are given in hertz (cycles per second). The more cycles per second, the higher the pitch. FIGURE 33.24 Effects of age aria occupational noise exposure. The graph shows the threshold hearing capacities fin decibels) for sounds of different frequencies (given in hertz) in a 25-year-okj carpenter (blue), a 50-year-old carpenter (red), and a 50-year-otd who did not have any on-the-job noise exposure (brown). 4. Based on these data, would you conclude that the hearing decline in the 50-year-old carpenter was caused by age or by job-related noise exposure?Detecting substances present in the body fluids that bathe them is the function of ___________. a. thermoreceptors b. photoreceptors c. mechanoreceptors d. chemoreceptors
- Receptor fields in the skins are smallest at tip of the nose the cheeks the anterior area of the palm of the hand the fingertip of the index fingerThe baroreceptors that detect a change in blood flow to the brain belong to a family of receptors also known as? Photoreceptors Mechanoreceptors Nociceptors O Chemoreceptors ThermoreceptorsScent-free zones are important recommendations because some people are very sensitive to odorants. What is one reason that someone might be over-sensitive to odorants? higher threshold to activate the Golf cascade greater hyperpolarized resting potential in olfactory neurons reduced sensitivity of the Golf response lower threshold to activate the Golf cascade
- The tympanic membrane is a covering that transmits sound to the inner portions of the frog ear. It doesn’t detect sound – it just transmits it. It would be similar to how the human eardrum works. It also protects the frog ear from water/debris. Some frogs have large external tympanic membranes; others have very small ones. Some frogs do not have them at all – they transmit sound to their ears in other ways. Look at the Coastal Plains leopard frog and the bull frog. Be able to identify the tympanic membranes, and the dorsolateral or supratympanic folds on both. Q18: can you please answer (type) both parts of this question A: What do you notice when you compare the glandular folds on the two frogs? And what does “supratympanic” mean? Why does that make sense?which is the answer The touch receptors located very close to the skin surface: are called Pacinian corpuscles are uniformly distributed throughout the surface of the body are relatively insensitive to light touch adapt very quickly to stimuliPain, especially intense sensations, is unpleasant and sometimes difficult for a person to cope with. Nevertheless, pain detection is essential for human survival. Explain how pain detection is necessary for a person's survival
- Melanopsin, the opsin in ipRGCs, is most sensitive to blue light- the wavelength of light that is emitted by the screens of most electronic devices. Explain how using these screens at night may disrupt your ability to go to sleep.Occupational Hearing Loss Frequent exposure to loud noise of a particular pitch can cause loss of hair cells in the part of the cochlea that responds to that pitch. People who work with or around noisy machinery are at risk for such frequency-specific hearing loss. Taking precautions such as using ear plugs to reduce sound exposure is important. Noise-induced hearing loss can be prevented, but once it occurs it is irreversible because dead or damaged hair cells are not replaced. FIGURE 33.24 shows the threshold decibel levels at which sounds of different frequencies can be detected by an average 25-year-old carpenter, a 50-year-old carpenter, and a 50-year-old who has not been exposed to on-the-job noise. Sound frequencies are given in hertz (cycles per second), The more cycles per second, the higher the pitch. FIGURE 33.24 Effects of age aria occupational noise exposure. The graph shows the threshold hearing capacities fin decibels) for sounds of different frequencies (given in hertz) in a 25-year-okj carpenter (blue). a 50-year-old carpenter (red), arid a 50-year-ofd who did not have any on-the-job noise exposure (brown). 1. Which sound frequency was most easily detected by all three people?Which of the following is a TRUE difference between most fish ears and mammal ears? Mammal ears include a cochlea, which is not found in fishes Some fish have 2 middle ear bones, while mammals have 3 Mammals have Weberian ossicles to aid in sound transfer to the inner ear, while no fish species have these Mammals have semicircular canals, while fish do not have these Please answer asap
