blood vessels widen and narrow due to body temperature conditions. for example, if the body is too hot the blood vessels will widen to bring more blood closer to the outer layer of the skin to release some heat. (this is why your face gets red when working out and for that your lips appears bloody colored) when the body is too cold the blood vessels will narrow to prevent heat loss by the blood and face becomes more pale. : )
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Annual Checkup
It is recommended that all individuals see a Family Doctor for a full medical examination annually. Adults should get their blood pressure checked (US Preventive Task Force), a flu vaccine (CDC) and more each year.
The American Dental Association recommends dental cleanings for adults at least twice annually. Some stains can only be removed by a professional cleaning.
It’s recommended by the American Academy of Ophthalmology that every adult between the ages of 18 and 80 does an eye examination at least once every two years.
It's recommended by the American Cancer Association that every adult between the age of 20 and 80 does an annual skin screening by a licensed dermatologist.
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