6B

• Conduction


  The transfer of heat through physical contact with another object
• Convection


  The transfer of heat via the movement of a liquid or gas between areas of different temperature
• Evaporation


  The loss of heat via the conversion of water from liquid to gas
• Radiation


  The transfer of heat via electromagnetic waves
• Metabolism


  The set of chemical reactions within cells that help maintain the body's normal functioning including converting food and drink to energy
• Thermoregulation


  The homeostatic process of maintaining a constant internal body temperature
• Endotherm


  An animal that produces the majority of its own heat via metabolic processes
• Ectotherm


  An animal that obtains heat primarily from the environment, rather than its own metabolic heat
• Hypothalamus


  A section of the brain in mammals that controls the maintenance of the body's internal environment
• Vasodilation


  The widening of blood vessels
• Cerebral Cortex


  The outer layer of the brain that plays a key role in a number of processes including memory, attention, and perception
• Arrector Pili Muscles


  Small muscles attached to hair follicles
• Skeletal Muscle


  A type of muscle that is voluntarily controlled and that is usually attached to bones
• Vasoconstriction


  The narrowing of blood vessels
• Brown Fat


  A type of body fat that is activated when the human body experiences low temperatures