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Thermoregulation Optimal body temperature (36.5–37.5°C) - Coggle Diagram
Thermoregulation
Optimal body temperature (36.5–37.5°C)
Stimulus: body Temperature increase above 37.5°C
Receptors: Nerve cells in skin & brain detect the increment.
Signals received by the brain's Hypothalamus (thermostat)
Activating cooling mechanism
Sweat glands secrete sweat that evaporates, to cool body
Temperature decreases
Thermostat shuts off cooling
mechanisms
Blood vessels in skin dilate for heat to escape
Responses include:
Decreased metabolism
Sweating
Vasodilation
Behavioral changes (e.g., seeking shade)
Stimulus: body Temperature decreases below 35.8°C
Receptors: Nerve cells in the skin & brain detect the decreasement.
Signals received by the brain's Hypothalamus (thermostat)
Activating warming mechanism
Blood vessels in skin constrict to minimise heat loss
Temperature increases
Thermostat shuts off warming
mechanisms
Skeletal muscles rapidly contract causing shivering, to generate heat
Responses include:
Increased metabolism
Piloerection (goosebumps)
Shivering
Behavioral changes (e.g., seeking warmth)
Vasoconstriction