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University of Toronto Scarborough
Health Studies
Anna Walsh

HLTB01H3Y: Health, Aging and the Life Cycle Department of Health Studies University of Toronto at Scarborough Summer 2010 Instructor: Anna Walsh. Term: Summer 2010 Mondays 10 a.m.-12 p.m. Lecture Room: SW 319. June 282010. A&G: Ch 7-Aging and the Regulatory Systems. N In order for the organs to function properly, they must be able to recognize changes in both the external and internal environment and be able to communicate with each other to maintain homeostasis, avert dangers, and manage growth. N We cant deny age related changes of regulatory systems N For organs to function properly we need to allow the body to communicate and maintain homeostasis Sensory Systems N The sensory system is composed of five senses: touch, smell, taste, hearing and vision. Sensory organs allow the nervous system to gain information about the external environment. o Allows nervous system to gather information about the external environment o Touch: skin allows us to sense external environment Both touch and pressure receptors (Meissners corpuscles and Pacinian corpuscles) have age related changes Impairs ability to manipulate small objects Touch impairment = diabetic neuropathy o Changes to sensory system causes problems Ex. person who has had a stroke > loses sensation, cant tell apart hot and cold Ex. Elderly often have altered sensation problems > may burn themselves Ex. loss of sensitivity makes it difficult to manipulate small objects such as buttons on a sweater o Smell 10% decline Olfactory blub is close to hippocampus One of the first symptoms of Alzheimers is a decrease in the sense of smell (refer to neurologist if this happens) Decrease in smell = decrease in appetite = nutritional intake affected, also may be unable to tell if the food has gone bad which makes them susceptible to food borne illnesses If GP only spends 5 minutes with them, they wont understand the implications o Taste Slight decrease in neuron sensitivity Loss of this is a reflection of certain conditions Taking medications may cause this, having periodontal disease www.notesolution.com
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