Thermal receptors are able to detect changes in body temperature if the temperature drops that are vessels constrict and muscles shiver causing the body temperature to rise what do we call this mechanism of regulation?

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the answer will be a) proteins i believe

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.