Swelling of blood vessels increases the amount of heat carried by the blood to the skin, allowing the excess heat to be expelled from the body. Blood vessels also constrict and conserve heat to raise body temperature. More »

According to the University of New Mexico (UNM), the human body maintains temperature by keeping a strict balance between heat loss and heat gain. The hypothalamus, which is found in the brain, is considered the body’s t... More »

When homeostasis is not maintained, the body cannot function properly and illness may ensure. Homeostasis is the process in which the body's overall internal environment is kept constant in response to any external envir... More »

All of the blue-colored blood vessels on a blood flow diagram show passages carrying deoxygenated blood from the heart to the lungs, while all of the red-colored passages show oxygenated blood being circulated throughout... More »

The normal temperature of human blood is roughly 98.6 degrees Fahrenheit, also known as "blood heat." This is also the normal body temperature for humans, although the temperature fluctuates by as much as one degree thro... More »

Some common effectors that cause vasoldilation and vasoconstriction include heat, medications, antidiuretic hormones and nitric oxide according to Midlands Technical College. When heat, a drop or rise in blood pressure o... More »

Blood that reaches the lungs travels throughout a network of small blood vessels, where oxygen moves into the blood and carbon dioxide moves out of the blood, according to the National Heart, Lung and Blood Institute. Th... More »