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Bruises are made when blood escapes from a torn blood vessel underneath the skin. As the bruise ages, the blood is dissolved back into the body. Different components of the blood are different colors, so it changes from dark red to purplish to yellowish as it ages.
Wiki User
∙ 8y ago
Wiki User
∙ 10y agoThe color is because small blood vessels called capillaries broke and resulted in small internal bleeding thus your skin turns black and blue.
That happens because small blood vessels called capillaries broke and resulted in small internal bleeding thus your skin turns black and blue.
Wiki User
∙ 13y agoTrauma or anything causing subdural bleeding.
Wiki User
∙ 14y agothey are not all black and blue. they change color by how bad they are. brown yellow and light green means that its not very bad as in purple blue and black are bad.
Wiki User
∙ 12y agobecause the bruise is blood under the skin..and the blood cells break down and realease chemicals that causes your skin to turn black and blue
Wiki User
∙ 13y agoBecause that is the blood underneath your skin trying to heal where you bumped into
Wiki User
∙ 10y agoBruises turn black and blue do to bleeding under the skin. Bruises are caused by burst blood vessels under the skin, creating this illusion of black and blue when looking at the skin.
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What causes nail to turn blue or black?
Your nail turns blue when the blood clot in it.
How long does it take for a black and blue mark to go away?
A bruise (also known as a contusion) usually last about 2 weeks. You can determine the age of a bruise by the color of it. It usually is: day 1-5 the bruise appears black or blue day 5-10 the bruise is lighter and more or less green or dark yellow day 10-14 the bruise turns yellow and then fades completely
What is the correct name for black and blue of the skin?
A black and blue mark is a bruise. A bruise in medicine is called a contusion. A bruise occurs when a force breaks small capillaries, letting blood ooze into the tissues.
What is the black and blue mark that happens after you get hurt?
A bruise
What is black and blue?
Black and blue generally refers to a new bruise or contusion. However, this is only in medicine. You could be referring to crayons.
Blue + black = what?
Black and blue generally refers to a new bruise or contusion. However, this is only in medicine. You could be referring to crayons.
Why is black and blue better than black and pink?
I like black and blue better because they are darker colors. On another topic... in terms of injury with bruises, pink, green, and lighter colors indicate the bruise is going away... being reabsorbed by the body.
Why did the leaf turn blue black when iodine was added in the starch test?
because photosynthesis has occured in the leaf. starch is produced and turns iodine blue-black indicating the presence of starch.
What does iodine do to popcorn?
It turns the iodine colour from brown to blue-black? This is because popcorn contains starch.
What turns blue black when stained with iodine?
Starches turn blue-black when stained with iodine (which usually stains things a reddish-brown or amber color).Iodine turns blue black when starch is present
What is the medical term of black and blue mark?
The medical term for bruise is contusion. More than one bruise or a large area of bruises is called contusions. Contusions start off as black and blue, but as they heal, they change to other colors.
Is it posable to give someone a black and blue mark?
yes it just a bruise all you need to do is him them hard enough
