NUTR 3150 Lecture Notes - Lecture 5: Volume Overload, Sinoatrial Node, Renal Function

• School: University of Guelph
• Department: Nutrition
• Course: NUTR 3150
• Professor: Kimberley Mc Comb

Document Summary

Skin: epidermis, contains skin cells, pigment and proteins. Impact: skin more susceptible to injuries, slower wound healing, higher prone to infections ocontribution to vitamin d deficiency, reduced tolerance for skin exposure, tendency to overheat. Impact: changes alone do not significantly impact healthy older adults, slightly elevated blood pressure may result, longer recovery time after each heartbeat. Other changes: vision, one of the first sensory changes we notice, cata(cid:396)a(cid:272)ts a(cid:374)d glau(cid:272)o(cid:373)a a(cid:396)e (cid:374)ot (cid:862)(cid:374)o(cid:396)(cid:373)al agi(cid:374)g(cid:863) Immunosenescense: increased o(cid:272)(cid:272)u(cid:396)(cid:396)e(cid:374)(cid:272)e of disease a(cid:374)d i(cid:374)fe(cid:272)tio(cid:374) that"s t(cid:455)pi(cid:272)al (cid:449)ith aging (due to decreased nutrients: loss of barrier function of skin/mucous membranes (decrease of langerhans cells) Change/decrease in t cell and b cell function oantibody response/specificities are impaired: decreased fever response to antigen exposure and prolonged acute phase. Energy requirements: extrapolated from younger adults (estimated energy requirement, 51-70 and 71+years old: men: 3,067kcal women: 2,403 kcal, estimated calorie deficit for each year over 19 years old (-10kcal for men, -7kcal for women)