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In fact, says Levine, measurements of vein size and capability to constrict blood vessels may predict which people are most likely to develop orthostatic intolerance after a space flight.
This compound mimics the action of superoxide dismutase, which constricts blood vessels and raises blood pressure.
After smoking, nicotine constricts blood vessels and impairs circulation to the body's extremities, as shown at far right.
Not only can endoscopy be used to examine the ulcer, doctors can also use laser therapy to seal the bleeding blood vessels or inject it with the drug epinephrine, which constricts blood vessels, he said.
Additionally, due to the use of 3rd-party terminal development, airport management lacks terminal and space usage flexibility, which constricts management's ability to maximize efficiency and accommodate new entrant carriers.
Its counterpart, thromboxane, abets clotting and constricts vessels.
The device constricts the cord in both places to prevent loss and splattering of blood, severing it in one single clean motion, with the clamp attached to the cord closest to the baby remaining in place for 48 to 78 hours until cord is dry.
When faced with a stressful situation, the adrenal gland pumps out epinephrine, a hormone that boosts heart rate and constricts blood vessels.