ANT 2511 Lecture Notes - Lecture 5: Senescence, Body Shape, Osteoclast
13 Apr 2018
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Document Summary
Growth velocity: environmental changes during growth = profound impacts on development. Human growth spurt is unique adaption among primates. Role of environment often as important as genetics in determining final form. Trend: people reaching farther extreme of continuum that genetics sets up. Bone loss results in porous, easily broken bones. Increase growth dev and longevity in women stemming from the need to tend to children. Blood vessels vasodilation: opening of vessels to increase blood flow. First species living africa had to rely on culture to adapt. Bergmann: body height; in hot climates people are taller and thinner; in colder climates people are smaller and stockier. Allen: limb length; longer in hot, shorter in cold. Need solar radiation for vitamin d production (bones need) Ex) allele for carrying oxygen in blood better. 20-25% of energy we eat goes to brain. Total daily energy expenditure: what we need to operate. Lack of calories isn"t entire problem but lack of micronutrients.
