Hairy skin is innervated by ❌ nerves; whereas non-hairy skin is innervated by ❌.
Heat-induced increases in blood flow are due to Vasodilation Vasoconstriction( Vasodilation, Vasoconstriction ) of skin arterioles and Opening up Closing down( Opening up, Closing down ) of arteriovenous anastomoses.
❌ is the (a?) neurotransmitter for vasodilator nerves, but nitric oxide mediates its vasodilator action. Cholinergic nerves that induce sweating may be the same ones that induce vasodilation. ❌ in sweat may also contribute to the vasodilation (via nitric oxide).
During extreme heat, skin blood flow can ❌ from ❌ to ❌.
What impact does dehydration have on the effectiveness of evaporative heat loss?
It reduces it
It greatens it
During exercise, what happens to the Mean Skin Temperature?
Not much
It drops
It rises
In response to increased “cold” receptor activity, the Autonomic and Somatomotor pathways both try to prevent hypothermia (/hypochondria?). How? Autonomic response → ❌; Somatomotor response → ❌;
