Heatloss mechanismsresponse to heat

a. Heat loss by radiation and convection increases when the ambient temperature increases.

- The response is orchestrated by the posterior hypothalamus.

- Increases in temperature cause a decrease in sympathetic tone to cutaneous blood vessels, increasing blood flow through the arterioles and increasing arteriovenous shunting of blood to the venous plexus near the surface of the skin. Shunting of warm blood to the surface of the skin increases heat loss by radiation and convection.

b. Heat loss by evaporation depends on the activity of sweat glands, which are under sympathetic muscarinic control.

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Diabetes 2

Diabetes 2

Diabetes is a disease that affects the way your body uses food. Normally, your body converts sugars, starches and other foods into a form of sugar called glucose. Your body uses glucose for fuel. The cells receive the glucose through the bloodstream. They then use insulin a hormone made by the pancreas to absorb the glucose, convert it into energy, and either use it or store it for later use. Learn more...

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