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OCR A Biology

Responses Core Hypothalamus Heat Centre Activated Temp Blood

Thermoregulation is controlled by negative feedback from heat loss and gain centers in the hypothalamus, which send impulses via the autonomic nervous system to effectors in the skin and muscles.

A termorregulação é controlada por feedback negativo a partir de centros de calor e ganho no hipotálamo, que enviam impulsos através do sistema nervoso autônomo para efetores na pele e músculos.

Front Controlling thermoregulation
Back
  • physiological responses to changes in core temperature caused by negative feedback control from hypothalamus (2 centres)
  • heat loss centre (activated when temp of blood flowing through hypothalamus increases, sending impulse through autonomous motor neurones to effectors in skin and muscles resulting in responses that lower core temp)
  • heat gain centre (activated when temp of blood flowing through hypothalamus decreases, sending impulses through ANS to effectors in skin and muscles resulting in responses that raise core temp)

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