yes
It's a survival technique. The body shivers to try and create heat. The blood vessels contact to restrict blood flow to the extremities.
The person who answered before doesn't know crap. Corn snakes constrict when they get older. as babies they dont
I can give you several sentences.That skirt is so tight it might constrict your circulation.Don't constrict your sister's breathing by putting your hands around her throat.Poverty can constrict a person's life.
The circulatory system undergoes vasoconstriction -- a process where blood vessels constrict in order to reserve heat in the core of the human body. The muscular system is responsible for shivering. Rapid twitching of the muscle results in heat being produced.
Pupils don't dilate from light, the constrict. They dilate in the dark, to take in more light, and constrict in the light so your eyes don't get damaged. Hallucinogenics, stimulants and alcohol and make your pupils dilate and opiates and diazepam can make them constrict. Im not sure what that's called though..
No a person can't live without blood vessels because blood vessels are what gets blood through your body and blood is the life essence which keeps us alive.
Long term use of marijuana on the body causes the person's heart rate to speed up and the blood vessels in the eyes expand. The brain can also deteriorate critical life skills over time.
an Anti-imperialist is a person who is against nations taking over foreign lands to expand
To expand on the game, Pet Shop Story, a person will first need to have enough gems collected during the game. To expand, simply access the market and click on the expand button to select how big the shop should expand.
Can you expand on what made you wonder this?
A normal sized person has 50,000 miles (yes, that is correct) of blood vessels. If that person is larger, there will be more vessels. Someone twice the normal size will have twice the number of blood vessels and twice the length. It will make the heart work harder.
I'm not sure that there is actually a percentage for this, but it is more common than some might think. While it might be slightly humorous to think of someone dying on the toilet, due to the contraction/constriction of the blood vessels and muscles while someone is defecating, people can suffer from severe heart attacks and die. (In a controlled setting, bearing down much like when a person is going to the bathroom can be used to lower pulse rates. This is called the Vasalva maneuver. When the person bears down, the blood vessels constrict a bit and help the body "naturally" lower its pulse.)