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there are a lots of reasons.. the most common one would be cold. when your body temperature decreases it causes the arterioles under the skin to constrict which results in decrease in heat loss from the body.
the other reasons would be neurogenic vasoconstriction during minor trauma to skin, and many more less common causes.
What else can I help you with?
What would happen if the anal sphincter failed?
There are 2 anal sphincter's; if they fail then feces will drip out of the anus.
Do your bowels really empty and pass feces when you die?
This sometimes happens when the muscles of the body relax allowing the sphincter muscle of the rectum to open, if there is fecal matter in the colon, then it can empty some of the contents. It does not always happen.
What will happen to your eyes when you enter a bright room?
When suddenly exposed to bright light, your pupils will automatically constrict (actually the constrictor muscles of the iris will contract, causing the iris to expand and narrow the pupil). Also, it is likely your eyelids will squint shut.
What would happen if the sphincter muscle was severed?
If the sphincter muscle, such as the anal sphincter, were severed, it could lead to issues with bowel control, resulting in fecal incontinence. Surgical intervention may be necessary to repair or reconstruct the sphincter to restore proper function. Physical therapy and lifestyle modifications may also be needed to manage symptoms.
What happen to the muscles when it is working?
When you work the muscles gets stronger and healthy.
In fetal pigs what would happen if the ducts arterioles failed to close at birth?
The blood pressure would be unsustainable and arteriosclerosis would occur
What would happen if girls flexed their ripped muscles in front of boys with no muscles?
the boys would swoon at their muscles.
What happen to the muscles when you stood or tiptoe?
dno
What muscles do girl have that boys don't?
boob musles. Vaginal muscles. These have to be relaxed for childbirth to happen.
What happen when muscles shorten?
What happens when a muscle shortens is that it is contracting. This is when the fibers of the muscles generate tension.
What happen to muscles when you exercise it?
They be hot and and put storng
When you die do you soil yourself?
Everything in your bowels does come out so if you have faeces in your bowels then yes you will have a bowel movement when you die
