HSM 330 Chapter Notes - Chapter 7: Neurofibrillary Tangle, Vascular Dementia, Vitreous Body

• School: Ryerson University
• Department: Health Services Management
• Course: HSM 330
• Professor: Daolun Chen

Document Summary

Chapter 7(aging and the regulatory system) textbook notes. Organs must recognize changes in both external and internal environment and be able to communicate with each other to maintain homeostasis in order to function properly. Composed of five senses: touch, smell, taste, hearing, and vision. Allows the nervous system to gain information about the external environment. Smell: modest changes in smell occur with age only 10% decline. Hearing: age related changes affect hearing and balance, middle ear a) 3 ossicles (little bones)- pass vibrations to the oval window b) oval window- a flexible membrane that is the beginning of the inner ear. 90, women lose 30: shorter hair cells respond to high frequencies are located at the beginning of cochlea and receive most wear and tear, risk factors: ototoxic drug use, and occupations with high noice exposure; Cataracts frequently in later years, although can occur at any age.