GENERAL HISTOLOGY

Detailed explanation-1: -The blood vessels of the dermis provide nutrients to the skin and help regulate body temperature. Heat makes the blood vessels enlarge (dilate), allowing large amounts of blood to circulate near the skin surface, where the heat can be released. Cold makes the blood vessels narrow (constrict), retaining the body’s heat.

Detailed explanation-2: -The blood vessels are dilated so more blood flows near and at the surface of your body to allow heat to be lost to the air. The smallest blood vessels, the capillaries, also dilate and this makes your skin feel warm to the touch. The blood vessels will narrow again when the body temperature is back to normal.

Detailed explanation-3: -The hypothalamus is the control center for both normal body temperature homeostasis and febrile response. The skeletal muscle, sweat glands, and blood vessels are all effectors.