ANT 301 Chapter Notes - Chapter 12: Great Fear, Melanocortin 1 Receptor, Eugenics
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In many areas, elds are abandoned after a few years and clearing occurs elsewhere: lactase persistence: in adults, the continued production of lactase, the enzyme that breaks down lactose (milk sugar). This allows adults in some human populations to digest fresh milk products. Such responses may be temporary or permanent, depending on the duration of the environmental change and when in the individual"s life it occurs. This can lead to spinal cord damage and paralysis. Monday, november 7, 2016: evaporative cooling: a physiological mechanism that helps prevent the body from overheating. Vasodilation is an involuntary response to warm temperatures, various drugs, and even emotional states (blushing): vasoconstriction: narrowing of blood vessels to reduce blood ow to the skin. Vasoconstriction is an involuntary response to cold and reduces heat loss at the skin"s surface: hypoxia: insuf cient levels of oxygen in body tissues; oxygen de ciency, vectors: agents that transmit disease from one carrier to another.