PHSI3011 06-2 Thermoregulation

Hairy skin is innervated by [blank_start]__________[blank_end] nerves; whereas non-hairy skin is innervated by [blank_start]__________[blank_end].

Heat-induced increases in blood flow are due to [blank_start]__________[blank_end] of skin arterioles and [blank_start]__________[blank_end] of arteriovenous anastomoses.

[blank_start]__________[blank_end] 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. [blank_start]__________[blank_end] in sweat may also contribute to the vasodilation (via nitric oxide).

During extreme heat, skin blood flow can [blank_start]__________[blank_end] from [blank_start]__________[blank_end] to [blank_start]__________[blank_end].

What impact does dehydration have on the effectiveness of evaporative heat loss?

During exercise, what happens to the Mean Skin Temperature?

In response to increased “cold” receptor activity, the Autonomic and Somatomotor pathways both try to prevent hypothermia (/hypochondria?). How? Autonomic response → [blank_start]__________[blank_end]; Somatomotor response → [blank_start]__________[blank_end];