The allergen causes the release of chemicals within the body which act to make the small arterial blood vessels dilate and to leak fluid from the capillaries into the surrounding tissues.
Before the operation, eye drops are given to dilate the pupil.
The doctors were using the drug to dilate the blood vessels supplying the babies' lungs, in the hope of reducing pulmonary hypertension.
The surgeon uses the urethral dilators and lubricating jelly to dilate the urethra to accommodate the desired sheath size.
Your eye doctor usually uses special eyedrops to dilate your pupils, opening them wider so he or she can see the back part of your eye.
This causes muscles to relax and allows bronchial tubes to dilate , aiding the flow of air to the lungs.
These drugs can slow the force of contraction of the heart and dilate the coronary arteries, thus reducing the demand for oxygen and increasing supply to the heart.
It is designed to fit inside the nostril and dilate the nasal valves by means of its elasticity and thus decrease nasal resistance and improve air flow.
the faithful could hear the minister dilate on the role religion could play
It causes the nerves at the back of the throat to signal the blood vessels to dilate - and fast.