b30_m1_l06_assign MODULE 1: LESSON 6 ASSIGNMENT

Impulse sound can result in immediate hearing loss that may be permanent. The structures of the inner ear may be severely damaged by such sounds. This kind of hearing loss may be accompanied by tinnitus, a ringing, buzzing, or roaring in the ears or head, which may subside over time. Hearing loss and tinnitus may be experienced in one or both ears, and tinnitus may recur constantly or occasionally throughout a lifetime. The structure of the hair cells is damaged by continuous exposure to loud noise. This results in hearing loss and tinnitus. Exposure to impulse and continuous noise may only cause a temporary loss of hearing. If hearing is recovered, the temporary loss of hearing is called a temporary threshold shift. The temporary threshold shift most often disappears within 16 to 48 hours after the exposure to the loud noise. Millions of North Americans, including children, adolescents, young adults, adults, and elderly persons, may develop noise-induced hearing loss. b30_m1_l06_assign MODULE 1: LESSON 6 ASSIGNMENT This Module 1: Lesson 6 Assignment is worth 85 marks. You are responsible to know and do both however you only have to submit one of the two parts to be graded. (85 marks) Lesson 6 Assignment—Mechanoreception—the Ear (15 marks) Part 2—Closed Written Response This question is intended to give you practice in improving your thinking and writing skills. It is similar to the data-based, closed-response written question that you will do on the Diploma Exam. Based on the information in the context box, and your understanding of the course, you are to provide very specific responses to the following list of questions. You might wish to review the “directing words” found on page 761 of your textbook before you write your responses. These directing words are used on your Diploma Exam and the assessments in this course to help you develop your answer to written response questions. Use the information below to answer the next question. (1 mark) 1. a. Identify the sensory receptors in the inner ear. Answer: (5 marks) b. Explain in detail how sound waves that are amplified by the ossicles are The six receptors of the inner ear consist of the cochlea, two otolith organs and three semicircular canals and share a common transduction unit made up of a sensory hair cell, a first order sensory neuron and the synapse between them. CONTINUES...